Neoplasms of the bony orbit and contents except the eyeball.
Diseases of the bony orbit and contents except the eyeball.
Bony cavity that holds the eyeball and its associated tissues and appendages.
Fractures of the bones in the orbit, which include parts of the frontal, ethmoidal, lacrimal, and sphenoid bones and the maxilla and zygoma.
A nonspecific tumor-like inflammatory lesion in the ORBIT of the eye. It is usually composed of mature LYMPHOCYTES; PLASMA CELLS; MACROPHAGES; LEUKOCYTES with varying degrees of FIBROSIS. Orbital pseudotumors are often associated with inflammation of the extraocular muscles (ORBITAL MYOSITIS) or inflammation of the lacrimal glands (DACRYOADENITIS).
Inflammation of the loose connective tissues around the ORBIT, bony structure around the eyeball. It is characterized by PAIN; EDEMA of the CONJUNCTIVA; swelling of the EYELIDS; EXOPHTHALMOS; limited eye movement; and loss of vision.
Abnormal protrusion of both eyes; may be caused by endocrine gland malfunction, malignancy, injury, or paralysis of the extrinsic muscles of the eye.
An autoimmune disorder of the EYE, occurring in patients with Graves disease. Subtypes include congestive (inflammation of the orbital connective tissue), myopathic (swelling and dysfunction of the extraocular muscles), and mixed congestive-myopathic ophthalmopathy.
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA).
Inflammation of the extraocular muscle of the eye. It is characterized by swelling which can lead to ischemia, fibrosis, or ORBITAL PSEUDOTUMOR.
New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.
Neoplasms containing cyst-like formations or producing mucin or serum.
The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.
The surgical removal of the eyeball leaving the eye muscles and remaining orbital contents intact.
The surgical removal of the contents of the orbit. This includes the eyeball, blood vessels, muscles, fat, nerve supply, and periosteum. It should be differentiated from EYE EVISCERATION which removes the inner contents of the eye, leaving the sclera intact.
Tumors or cancer of the EYE.
Surgery performed on the eye or any of its parts.
Two or more abnormal growths of tissue occurring simultaneously and presumed to be of separate origin. The neoplasms may be histologically the same or different, and may be found in the same or different sites.
Tumors or cancer of the SKIN.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
A visual symptom in which a single object is perceived by the visual cortex as two objects rather than one. Disorders associated with this condition include REFRACTIVE ERRORS; STRABISMUS; OCULOMOTOR NERVE DISEASES; TROCHLEAR NERVE DISEASES; ABDUCENS NERVE DISEASES; and diseases of the BRAIN STEM and OCCIPITAL LOBE.
An acute, diffuse, and suppurative inflammation of loose connective tissue, particularly the deep subcutaneous tissues, and sometimes muscle, which is most commonly seen as a result of infection of a wound, ulcer, or other skin lesions.
Abnormal growths of tissue that follow a previous neoplasm but are not metastases of the latter. The second neoplasm may have the same or different histological type and can occur in the same or different organs as the previous neoplasm but in all cases arises from an independent oncogenic event. The development of the second neoplasm may or may not be related to the treatment for the previous neoplasm since genetic risk or predisposing factors may actually be the cause.
Tumors or cancers of the KIDNEY.
A common form of hyperthyroidism with a diffuse hyperplastic GOITER. It is an autoimmune disorder that produces antibodies against the THYROID STIMULATING HORMONE RECEPTOR. These autoantibodies activate the TSH receptor, thereby stimulating the THYROID GLAND and hypersecretion of THYROID HORMONES. These autoantibodies can also affect the eyes (GRAVES OPHTHALMOPATHY) and the skin (Graves dermopathy).
An adenocarcinoma producing mucin in significant amounts. (From Dorland, 27th ed)
Tumors or cancer of the THYROID GLAND.
Conditions which cause proliferation of hemopoietically active tissue or of tissue which has embryonic hemopoietic potential. They all involve dysregulation of multipotent MYELOID PROGENITOR CELLS, most often caused by a mutation in the JAK2 PROTEIN TYROSINE KINASE.
Each of the upper and lower folds of SKIN which cover the EYE when closed.
Diseases of the lacrimal apparatus.
A vascular anomaly that is a collection of tortuous BLOOD VESSELS and connective tissue. This tumor-like mass with the large vascular space is filled with blood and usually appears as a strawberry-like lesion in the subcutaneous areas of the face, extremities, or other regions of the body including the central nervous system.
A vascular anomaly due to proliferation of BLOOD VESSELS that forms a tumor-like mass. The common types involve CAPILLARIES and VEINS. It can occur anywhere in the body but is most frequently noticed in the SKIN and SUBCUTANEOUS TISSUE. (from Stedman, 27th ed, 2000)
A dull or sharp painful sensation associated with the outer or inner structures of the eyeball, having different causes.
Intraocular hemorrhage from the vessels of various tissues of the eye.
A vascular anomaly composed of a collection of large, thin walled tortuous VEINS that can occur in any part of the central nervous system but lack intervening nervous tissue. Familial occurrence is common and has been associated with a number of genes mapped to 7q, 7p and 3q. Clinical features include SEIZURES; HEADACHE; STROKE; and progressive neurological deficit.
A dull red, firm, dome-shaped hemangioma, sharply demarcated from surrounding skin, usually located on the head and neck, which grows rapidly and generally undergoes regression and involution without scarring. It is caused by proliferation of immature capillary vessels in active stroma, and is usually present at birth or occurs within the first two or three months of life. (Dorland, 27th ed)
A centrally active muscarinic antagonist that has been used in the symptomatic treatment of PARKINSON DISEASE. Benztropine also inhibits the uptake of dopamine.
A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.
Endogenous amino acids released by neurons as excitatory neurotransmitters. Glutamic acid is the most common excitatory neurotransmitter in the brain. Aspartic acid has been regarded as an excitatory transmitter for many years, but the extent of its role as a transmitter is unclear.
Procedures used to reconstruct, restore, or improve defective, damaged, or missing structures.
Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The branch of surgery concerned with restoration, reconstruction, or improvement of defective, damaged, or missing structures.
Analog or digital communications device in which the user has a wireless connection from a telephone to a nearby transmitter. It is termed cellular because the service area is divided into multiple "cells." As the user moves from one cell area to another, the call is transferred to the local transmitter.
Tongues of skin and subcutaneous tissue, sometimes including muscle, cut away from the underlying parts but often still attached at one end. They retain their own microvasculature which is also transferred to the new site. They are often used in plastic surgery for filling a defect in a neighboring region.
Abnormal descent of a pelvic organ resulting in the protrusion of the organ beyond its normal anatomical confines. Symptoms often include vaginal discomfort, DYSPAREUNIA; URINARY STRESS INCONTINENCE; and FECAL INCONTINENCE.
A general term for various neoplastic diseases of the lymphoid tissue.
Any of a group of malignant tumors of lymphoid tissue that differ from HODGKIN DISEASE, being more heterogeneous with respect to malignant cell lineage, clinical course, prognosis, and therapy. The only common feature among these tumors is the absence of giant REED-STERNBERG CELLS, a characteristic of Hodgkin's disease.
A specialized agency of the United Nations designed as a coordinating authority on international health work; its aim is to promote the attainment of the highest possible level of health by all peoples.
A malignant disease of the B-LYMPHOCYTES in the bone marrow and/or blood.
A subclass of closely-related SOX transcription factors. Members of the group have been found expressed in developing neuronal tissue, LYMPHOCYTES, and during EMBRYONIC DEVELOPMENT.
A progressive, malignant disease of the blood-forming organs, characterized by distorted proliferation and development of leukocytes and their precursors in the blood and bone marrow. Leukemias were originally termed acute or chronic based on life expectancy but now are classified according to cellular maturity. Acute leukemias consist of predominately immature cells; chronic leukemias are composed of more mature cells. (From The Merck Manual, 2006)
A discipline concerned with studying biological phenomena in terms of the chemical and physical interactions of molecules.

Immunoglobulin VH gene expression among extranodal marginal zone B-cell lymphomas of the ocular adnexa. (1/350)

PURPOSE: Most lymphomas of the ocular adnexa are primary extranodal non-Hodgkin's lymphomas of the B-cell type, with the most common lymphoma subtype being the extranodal marginal-zone B-cell lymphoma (EMZL). Analysis of somatic mutations in the variable (V) region of the Ig heavy (H)-chain gene segment suggests that EMZL development in other locations is dependent on antigen stimulation. The purpose of this study was to analyze the presence of somatic hypermutations in clonally rearranged Ig H-chain V genes of this lymphoma entity in the ocular adnexa and to estimate whether the mutation pattern is compatible with antigen selection. METHODS: Twenty-six cases of EMZL of the ocular adnexa were diagnosed on the basis of morphology, histology, and immunohistology. A nested polymerase chain reaction (PCR) was performed on DNA extracted from paraffin sections. The isolated PCR products were sequenced and compared with published VH germline segments to determine the number of somatic mutations in the complementarity-determining region (CDR) 2 and framework (FW) region 3. RESULTS: The number of somatic mutations in the cases of EMZL varied between 0 and 24: Five cases involved 0 to 3 somatic mutations, and the remaining 21 cases involved 4 to 24 mutations. Based on the ratio of replacement (R) to silent (S) mutations in the CDR2 or FW3 regions, antigen selection seems to have occurred in 60% of ocular adnexal EMZL. The VH3 family was the most commonly expressed germline VH family (54%), followed by VH4 (23%), with biased usage of the latter. Some germline VH1 genes used included DP-8, DP-10, DP-53, DP-63 (VH4.21), and DP-49, which are frequently used by autoantibodies (e.g., rheumatoid factors) and natural autoantibodies. CONCLUSIONS: EMZLs of the ocular adnexa have an Ig H-chain mutation pattern that supports the concept that they represent a clonal expansion of post-germinal-center memory B-cells in most instances. In two thirds of cases, antigen selection may have occurred, and autoantibodies may have a role in their development.  (+info)

Prenatal sonographic features of embryonal rhabdomyosarcoma. (2/350)

We describe a case of fetal rhabdomyosarcoma detected during the third trimester of pregnancy by prenatal sonography. At 33 weeks' gestation, sonography performed because of suspected polyhydramnios showed a solid mass of 120 x 54 mm arising from the anterior wall of the fetal thoracic cage. Another mass within the left maxillary area which originated from the left orbital floor was also detected. In the abdomen, there were multiple round masses in and around the liver. As the previous scan at 28 weeks had appeared normal, the multiple masses which became visible and enlarged rapidly in different locations led us to believe that there was fetal cancer. The most likely diagnosis was rhabdomyosarcoma (which was later confirmed), because it is the most prevalent soft-tissue tumor in children and may develop within or outside muscle anywhere in the body and at any age. Two other reported cases which were detected by prenatal ultrasound examination are also discussed.  (+info)

Orbital lymphangioma: an analysis of 26 patients. (3/350)

AIM: To evaluate retrospective data on the clinical findings, histological features, radiological diagnosis, and management outcomes in orbital lymphangioma. METHODS: Data on 26 orbital lymphangioma patients managed over 16 years were re-evaluated. The computed tomograph and magnetic resonance scans and histological slides were reviewed. Parametric techniques were used to assess correlations among clinical, radiological, and histopathological factors. RESULTS: At presentation proptosis was present in 85%, ptosis in 73%, and restrictive eye movements in 46% of patients. The accuracy of the initial radiology interpretations was 77%. 24 cases required one or more surgeries. The mean follow up was 9.2 years (range 1-14 years). 58% of patients developed recurrences. In cases that recurred, motility restriction was significantly more frequent at initial examination than cases without recurrence (p < 0.05). After therapy, 75% of patients were satisfied with their visual function and cosmetic appearance. CONCLUSIONS: Conservative management of orbital lymphangioma with multiple partial resections may achieve satisfactory results.  (+info)

Cavernous hemangiomas of the orbit: MR imaging. (4/350)

PURPOSE: To describe the MR imaging findings in eight patients with cavernous hemangioma of the orbit. METHODS: CT, MR imaging and echographic studies of eight patients with cavernous hemangioma localized in the orbit were reviewed. All patients presented with a progressive symptomatology: in seven cases with a painless proptosis, in one case with a failing of visual acuity of the concerned eye. The patients were examined with T2- and T1-weighted spin echo sequences, before and after intravenous administration of Gadolinium*, in axial, coronal and sagittal planes. In seven patients, a fat saturation prepulse was given after the Gd-enhanced study. Two patients were also examined with CT scan, with and without intravenous contrast administration. Three patients underwent a Doppler color-coded transorbital sonography. The analyzed criteria were: location, form, margins, size, signal or density. Seven patients underwent surgery with pathologically proved cavernous hemangioma. In one patient, therapy was conservative, because of the absence of significant clinical complaints. RESULTS: In all cases, MRI showed a well-defined intraconal mass. The lesions were homogeneous, isointense to muscle on the T1-weighted sequence and hyperintense to muscle on the T2-weighted sequences. In five cases, a peripheral rim, hypointense to the mass on the T1- and T2-weighted sequences could be observed. After Gadolinium*, six lesions showed initial central patchy enhancement. On the three following T1-Gadolinium* sequences, these lesions showed total and homogeneous filling. In two patients, the lesions showed immediate homogeneous enhancement. On CT, the orbital masses were spontaneously hyperdense, with associated focus of microcalcifications. On echography, the lesions appeared hyperechogenic, heterogeneous, with individualization of small areas of very slow flow. CONCLUSION: From the analysis of the MR appearance of an intraconal, well-defined mass, associating homogeneous signal, isointense to muscle on T1-weighted sequence, hyperintense on T2-weighted sequence, and especially progressive filling on Gd-enhanced sequences, the diagnosis of cavernous hemangioma may be highly suggestive, in a patient presenting a painless progressive proptosis.  (+info)

Phase II window of idarubicin in children with extraocular retinoblastoma. (5/350)

PURPOSE: The aim of this study was to evaluate in an upfront phase II study the response to idarubicin in children with extraocular retinoblastoma. PATIENTS AND METHODS: The starting dose of idarubicin was 15 mg/m(2)/d (days 1 and 2) weeks 0 and 3. After an interim evaluation, the dose was reduced to 10 mg/m(2)/d (days 1 and 2) weeks 0 and 3 because of hematopoietic toxicity. Response was evaluated at week 6. RESULTS: At the Hospital JP Garrahan (Buenos Aires, Argentina), 10 patients (five bilateral) were entered onto the study from 1995 to 1998. A total of 19 cycles were administered. Extraocular sites included orbit (n = 10), bone marrow (n = 3), bone (n = 1), lymph node (n = 1), and CNS (n = 1). The response rate was 60% (95% confidence interval, 30% to 90%). One complete response was achieved, in addition to five partial responses, two cases of stable disease, and two cases of progressive disease. All patients with bone marrow involvement achieved complete clearance of tumor cells. The patient with CNS disease had progressive disease. All patients had severe hematopoietic toxicity (grade 4 neutropenia and grade 3/4 thrombocytopenia after most cycles). Other toxicities included grade 2 diarrhea in 30%. No echocardiographic changes were detected. CONCLUSION: Idarubicin is active in extraocular retinoblastoma. The activity of this drug should be explored in future phase III studies.  (+info)

Combined fat- and water-suppressed MR imaging of orbital tumors. (6/350)

BACKGROUND AND PURPOSE: The use of a high-resolution T2-weighted MR sequence, which suppresses signal from both fat and water, has been shown to be highly effective for depicting areas of inflammatory damage within the optic nerve. The ability of this sequence to show neoplastic and inflammatory orbital lesions, which may mimic neuritis, is unknown. This study was designed to examine the characteristics of such a sequence for the investigation of orbital mass lesions. METHODS: Twenty-eight patients with known or suspected mass lesions of the orbit and six healthy volunteers were recruited for study. Imaging was performed with a 1.5-T MR unit. Participants were examined by selective partial inversion recovery (SPIR) sequences with T2-weighted fast spin-echo acquisition, selective partial inversion recovery/fluid attenuated inversion recovery (SPIR/FLAIR) sequences with fast spin-echo acquisition, short tau inversion recovery (STIR) sequences with fast spin-echo acquisition, and SPIR sequences with contrast-enhanced T1-weighted fast spin-echo acquisition. Two neuroradiologists, using a randomised, blinded method, scored images for lesion presence and extent. Lesion extent was defined as the number of images with visible abnormality, and was compared with the standard of reference established at a later date by consensus review of all imaging sequences. The ability of the sequences to show the presence and extent of pathologic lesions was compared. RESULTS: The SPIR/FLAIR sequence showed both the presence and extent of orbital masses significantly better than did either STIR or T2-weighted SPIR sequences (P<.01 and P<.001, respectively). Contrast-enhanced T1-weighted SPIR images ranked better than SPIR/FLAIR images, although the difference failed to reach statistical significance. In the orbital apex, the SPIR/FLAIR technique was superior to all other techniques used. This reflected its ability to distinguish enhancing, pathologic lesions from enhancing, normal anatomy. CONCLUSION: SPIR/FLAIR is an appropriate screening technique for orbital masses and offers significant advantages over currently used fat-suppressed sequences for the investigation of orbital disease.  (+info)

Recurrent proptotic diplopia due to congestive expansion of cavernous haemangioma with relapsing right-sided cardiac failure. (7/350)

A 75-year-old man with a recent history of pulmonary embolism, presented with collapse followed by a gran mal seizure and right-sided non-pulsatile proptosis. On recovery, he had diplopia on lateral and upward gaze and signs of congestive cardiac failure. Further pulmonary embolism was proven by lung scintigraphy. Computed tomography of his orbits confirmed a contrast-enhancing space-occupying lesion of the medial wall of the right orbit, with no intracranial abnormality. The patient was investigated for metastatic tumour as a possible cause of the space-occupying lesion and the unprovoked thromboembolic event, but no evidence of malignancy was found. The orbital lesion was not biopsied because of the risk of bleeding from anticoagulation. Three weeks later, the patient represented with recurrent cardiac failure, proptosis, and diplopia. A transorbital ultrasound confirmed an encapsulated, well-defined vascular lesion, with typical appearances and Doppler flow characteristics of a cavernous haemangioma. Diuretic therapy abolished the proptosis and diplopia in tandem with relief of the cardiac failure. This is the first description of recurrent proptosis with diplopia due to recurrent congestive expansion of an orbital cavernous haemangioma.  (+info)

Unusual mode of spread and presentation of meningioma: a case report. (8/350)

Although rare, extracranial extension of a meningioma has been well documented. An interesting natural history of neglected meningioma with skull vault hyperostosis and predominantly extracranial extension is described. Following surgical resection of the highly vascular meningioma, the patient developed fatal coagulopathy.  (+info)

Follicular thyroid carcinoma (FTC) is the second most common type of thyroid cancer after papillary carcinoma. It usually grows slowly and is clinically indolent; but rarely, its aggressive forms with distant metastases can occur. We report here an uncommon case of bilateral orbital metastasis of FTC. A 70-year-old woman presented with bilateral exophtalmus and past medical history of thyroid nodule surgery 15 years ago. Radiologic evaluation showed massive bilateral orbital mass with extension to calvarium. Tumor decompressed and removed with the suction and curettage and the patient was treated with chemoradiotherapy after operation. Pathologic examination showed metastatic follicular thyroid carcinoma. Although orbital metastasis of follicular thyroid carcinoma is uncommon, FTC should be considered as a potential primary neoplasm in a patient with orbital mass
TY - JOUR. T1 - Role of radiotherapy for primary orbital lymphoma. AU - Lee, Sang Wook. AU - Suh, Chang Ok. AU - Kim, Gwi Eon. AU - Yang, Woo Ick. AU - Lee, Sang Yeul. AU - Hahn, Jee Sook. AU - Park, Joon Oh. PY - 2002/6/18. Y1 - 2002/6/18. N2 - To define the role of radiation therapy of primary orbital lymphoma, a retrospective analysis was undertaken for 18 patients with primary orbital lymphoma who were treated with curative radiotherapy between 1984 and 1995. The histology was found to be low grade lymphoma in 11 patients, intermediate grade in 7. All patients were of Ann Arbor stage IE, but bilateral involvement of the orbit was observed in 3 patients (16.6%). Anatomical subsites involved were the retrobulbar, eyelid, and conjunctiva in eight, five, and four patients, respectively. The median radiation dose was 30 Gy ranging from 20 Gy to 50 Gy. Twelve of 18 patients received a radiation dose of 30 Gy or less. To properly protect the lens during irradiation, the contact lens blocks were ...
The orbital rhabdomyosarcoma is one of the most frequent malignant orbital tumours in children. At this age, the common histological types are the embryonal and alveolar type. The onset is mainly under the age of 16. Without a recent and correct treatment it can give metastasis in lung and bone. The hereby paper presents one clinical case of a teenager presented at the ophthalmological consultation for a small tumor located in the superomedial part of the orbit. Computed tomography (CT) and magnetic resonance imaging (MRI) supported the diagnosis revealing the location and extension of the tumor. During the surgery, we discovered two small tumors and the histological examination revealed an embryonal type of orbital rhabdomyosarcoma. After the surgery, the patient followed an oncological treatment consisting of chemotherapy and local radiotherapy. The prognosis for life was favorable, linked with the recent diagnosis and treatment, the histological type and the good response at the oncological ...
Journal of Neonatal Surgery is a peer-reviewed and open-access electronic journal. Only a few journals are being published on Neonatal Surgery especially from a developing country, which justifies the need of a new journal on this subject.
Orbital Tumors Stockton - Central Valley Eye Medical Group offers treatment for Orbital Tumors. Our office serves Stockton, Manteca CA and surrounding areas
Between April 2014 and June 2019, 16 patients with orbital tumors underwent either ETOA or EEA at the authors institution. Based on the neuro-topographic four-zone model of the orbit with its tumor epicenter around the optic nerve in the coronal plane, ETOA (n = 10, 62.5%) was performed for tumors located predominantly superolateral to the nerve and EEA (n = 6, 37.5%) for those located predominantly inferomedial to the nerve. Eight patients (50%) presented with intraconal tumors and 8 (50%) with extraconal ones. The orbital tumors included orbital schwannoma (n = 6), cavernous hemangioma (n = 2), olfactory groove meningioma (n = 1), sphenoorbital meningioma (n = 1), chondrosarcoma (n = 1), trigeminal schwannoma (n = 1), metastatic osteosarcoma (n = 1), mature cystic teratoma (n = 1), sebaceous carcinoma (n = 1), and ethmoid sinus osteoma (n = 1). The clinical outcomes and details of surgical techniques were reviewed. ...
Eyelid Cancer Blepharospasm Corrective Plastic Surgery Eyelashes Disease Tear Duct Tear Duct Disease Tear Duct Trauma Dry Eyes Orbital Thyroid Eye Desease Anophthalmic Socket Orbital Tumor Orbital Trauma Orbital Tumor The orbital socket contains the eye globe, extraocular muscles, nerves and vessels of the eyeball. Some tumors can form in this space or migrate to this area from other parts of the body.
Chemotherapy for orbital rhabdomyosarcoma (1 course) (costs for program #83807) ✔ University Hospital Düsseldorf ✔ Department of Pediatric Oncology, Hematology and Immunology ✔ BookingHealth.com
Chemotherapy for orbital rhabdomyosarcoma (1 course) (costs for program #142415) ✔ Academic Hospital Schwabing ✔ Department of Pediatrics ✔ BookingHealth.com
Eyelid, Conjunctival, and Orbital Tumors An Atlas and Text : Eyelid, Conjunctival, and Orbital Tumors An Atlas and Text Pub Date: December 2007
Arch Ophthalmol 1986; Hemanigomas. 91,94,94a,94b In this instance, the clinical history of an earlier liposarcoma at another site obviously would propranolтl required to establish that the lesion is not primary in the orbit; orbital metastasis can develop 10 years after a propranolol for hemangiomas of infancy tumor is found elsewhere in the body. 5 to 1. The number and location of selective neurotransmitter receptor sites provides valuable information about the potential response of a neuron to a specific neurotransmitter.
Le cancer prostatique est parmi les cancers les plus pourvoyeurs de métastases Osseuses. Cependant, trèspeu de cas de métastases orbitaires ont été rapportés dans la littérature. Leur survenue constitue un tournantévolutif défavorable de la maladie et un traitement urgent serait nécessaire vu que le pronostic fonctionnelde loeil atteint est mis en jeux.Nous rapportons un cas de métastase orbitaire dun adénocarcinome prostatique et nous revoyons lesparticularités diagnostiques et thérapeutiques de cette affection.. MOTS CLÉS : Adénocarcinomeprostatique;déprivation androgénique;hormono-résistance;métastase orbitaire. Herein, we report a rare case of metastasis of prostate cancer in the orbit with pertinent literature review.Although, prostate cancer can metastasize in any organ, yet orbital metastasis indicates an aggressive diseasecourse with eminent loss of vision. Very few similar cases have been reported in the literature.. KEYWORDS : Prostatic adenocarcinoma;Androgen ...
A systemic radiological approach to examining the images is needed to reach a differential diagnosis. The images should be studied for lesion appearance, localization, contrast enhancement, bony orbit evaluation, and detection of calcifications.[3,4]. The lesion appearance on imaging includes; solid or cystic, well circumscribed or ill-defined, and localized or infiltrative.[4] Comparing the density of the lesion with that of the vitreous body can help to identify a solid lesion, whose density is higher than that of vitreous on CT images.[4]. Orbital tumors can be localized anatomically to within the globe/intraocular or intraconal or in the extraconal space, the orbital apex, the extraocular muscles, or the lacrimal gland. CT remains the modality of choice for evaluation of the bony orbit and paranasal sinuses. MRI is preferred to evaluate the optic nerve and chiasm.[3,4]. Contrast enhancement aids in the characterization of orbital masses. Moderate to marked enhancement is usually noted in ...
TY - JOUR. T1 - Primary orbital peripheral T-cell lymphoma. T2 - Histologic, immunophenotypic, and genotypic features. AU - Janatpour, Kim A.. AU - Choo, Philip H.. AU - Lloyd, William C.. PY - 2007/9. Y1 - 2007/9. UR - http://www.scopus.com/inward/record.url?scp=34548619971&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=34548619971&partnerID=8YFLogxK. U2 - 10.1001/archopht.125.9.1289. DO - 10.1001/archopht.125.9.1289. M3 - Article. C2 - 17846377. AN - SCOPUS:34548619971. VL - 125. SP - 1289. EP - 1292. JO - JAMA Ophthalmology. JF - JAMA Ophthalmology. SN - 2168-6165. IS - 9. ER - ...
Introduction: Ultrasonography has proved its accuracy in orbital imaging by virtue of its high frequency probes and b mode imaging. The CT extends privilege of perfect anatomical images and better delineation using intravenous contrast. The current study evaluated clinical and radiological presentation of various orbital lesions; and compared diagnostic accuracy of USG and CT. Material and methods: A prospective observational study was planned at a tertiary teaching institute on 100 patients referred to radiology department for ultrasonography and computed tomography of orbit. Patients with lesions arising primarily from orbit or spread from adjacent structures were included in the study. Observations: Majority of patients were pediatric; common etiology being retinoblastoma and infection. The central orbital space was most predisposed in inflammatory and vascular lesions: and, peripheral orbital space in neoplastic, trauma, congenital, lacrimal gland and fossa lesions. The diagnostic ...
Online medical lecture about vascular orbital tumours, mesenchymal tumours and meningioma pathology. Get help to make medical student education easy.
The complete recovery from the orbital tumor surgery takes around 4 weeks time but the patient can start performing normal non strenuous activities after 10 days of surgery.
At Oasis Eye Face and Skin, we can accurately diagnose and provide comprehensive care for orbital tumors and other eye disorders, (541) 708-6393.
Superior view of right orbit, middle fossa, and brainstem. The roof of the right orbit has been removed and the periorbita is shown enclosing...
Are you looking for disease information or support? Simply type in the name of a disease or condition and Disease InfoSearch will locate quality information from a database of more than 13,000 diseases and thousands of support groups and foundations.
lateral rectus muscle. Later he was hospitalized due to fever and vomiting in left orbital lesion, suspecting a metastatic ... Oncohematology Clinic of Padua Hospital due to fever and vomiting in left orbital lesion, suspecting a metastatic ... - from 5th to the 12th July, 2009 hospitalization due to fever , an extract of the discharge letter is reported: Discharge .... ...
In this study, we present 2 patients, including 1 pediatric patient, with orbital tumors in the deep superonasal intraconal space, which were approached with upper fornix technique combined with a superior lateral cantholysis. The first patient was a 1-year-old girl who had presented with left upper eyelid retraction since the age of 2 months. Imaging studies revealed an orbital mass in the left p...
A halo orbit is a type of orbit around an L1, L2, or L3 Lagrangian point. It is periodic, in that it follows same path each cycle other than the slow degradation due to the points instability (which can be handled by stationkeeping). Such orbits can allow a line of sight around the body in the middle, such as an orbit beyond the Moon that always has a line of sight to stations on Earth. They also help allow multiple spacecraft to operate at (near) the same point, such as all the spacecraft at Earth-Sun L1 and L2. Two other kinds of orbits are possible for use at the L1-L3 points: a Lissajous orbit, which is not periodic in the same sense. With each cycle, the path is different, but I believe they remain in a cylinder-like thin curved volume. Lissajous orbits are now more commonly used than halo orbits. A Lyapunov orbit is also aperiodic, but remains in a plane. I suspect halo orbits and Lyapunov orbits can be looked at as special cases of Lissajous orbits, but I havent seen this stated. ...
Management of any orbital tumor depends upon whether it is likely to be benign or cancerous. Well-localized benign tumors are often removed completely, using minimally invasive techniques via hidden incisions. Though orbital tumors can also be removed by a neurosurgeon via a brain-surgery approach, it is far less invasive to get it done from an orbital surgeon. Histopathological confirmation is the best way to ensure complete removal and to know the exact diagnosis. Reconstruction of the orbit after removal of the mass is dependent on the size and location of the defect. Various reconstruction options are available ...
Tumors and inflammations can occur behind and around the eye. They can push the eye forward causing a bulging of the eye called proptosis...
Hejazi N, Hassler W, Farghaly F: Transconjunctival microsurgical approach to the orbit: a retrospective preliminary review and analysis of experience with the first 15 operative cases. Neurosurg Quart 1999; 9: 197 208 ...
In these updated and revised third editions, world-renowned authorities at the Wills Eye Hospital provide outstanding guidance on recognition, evaluation, and treatment of ocular tumors, highlighted by more than 5,500 stunning photographs and surgical drawings.
The ocular examination should include the best corrected visual acuity and intraocular pressure applana-tion in the primary position and in different vertical
Chabot JD, Stefko ST, Fernandez-Miranda JC. Lateral Orbitotomy Approach for Resection of Intraosseous Sphenoid Wing Meningioma: 3-Dimensional Operative Video. Oper Neurosurg (Hagerstown). 2017 Jun 1;13(3):399. doi: 10.1093/ons/opw026. PubMed PMID: 28521357 ...
Endoscopic left middle meatal antrostomy and complete ethmoidectomy was performed. Lateral orbitotomy with osteotomy was also performed and an intraconal collection of foul-smelling, purulent fluid containing gas bubbles was encountered . This material was evacuated, intraoperative cultures were obtained, and a surgical drain was placed. Intravenous ampicillin sodium/sulbactam sodium (Unasyn, Pfizer, NY, NY) was administered postoperatively ...
My employer used to operate the 3 Sirius Radio Satellites for them. They are highly inclined Geosynchronous, and are set so at least one of the 3 is always over North America. The idea is to have a higher look angle for most of their customers, reducing dropouts from obstructions. The Kep data for the 3 of them as well as XM radios birds is available from Celestrack at http://www.celestrak.com/NORAD/elements/other-comm.txt . The 3 Sirius birds currently in orbit are Space Systems Loral FS 1300 Series birds modified so they can be flown inclined. 73 DE Mark KK7CU On 2/22/08, Alan Sieg WB5RMG ,[email protected], wrote: , , ,, The Sirius birds are in an Inclined Orbit. , , , Is this type of orbit can be a solution for the next HEO? , , , The reference to the Molniya orbit could be to recall the orbit of , AO-13... slow high-altitude lingering Northern Hemisphere apogees, , rotating ascending nodes about the globe to distribute coverage more , evenly around the globe. Over the US, next over ...
Update your local map file entry with the path to the Orbit bundle. The platform releng team has added an orbit.map to their map file project org.eclipse.releng/maps, see example orbit map The reason we dont consume the Orbit map directly yet is because we are migrating to Orbit bundles on a ongoing basis. If we consumed the Orbit map file directly today, we would have duplicate locations for the several bundles which would cause build issues. Once we have migrated completely to consuming all our third party libraries from Orbit, we plan to modify our build process to consume the Orbit map file directly and remove the orbit.map from our map file project ...
Author:Chauhan Sanjay C, Shah Sejal J, Patel Amul B, Rathod Hitesh K, Surve Sunil D, Nasit Jitendra G. Keywords:ophthalmic lesions, histopathological study, eyelid, conjunctiva, orbital lesion. Type:Original Article. Full PDF Abstract ...
The OP is inherently a less accurate plane to measure on account of the lack of precise landmarks. Zollikofer et al. (2005) and Brunet and Allemand (2005) did not provide details of how they measured the orientation of the OP, but judging from the illustrations it was obtained by drawing a vertical line in the middle of the orbit extending from the anterodorsal margin of the orbit to the antero-ventral edge of the orbit immediately beneath the former point. There are four main difficulties with this measurement, the first being that the left and right sides of the same skull may be different (in fact each orbit has its own OP). The second, and a more serious difficulty is that the upper and lower margins of the orbits are curved dorsoventrally (strongly) and mediolaterally (gently), and thus it is difficult to define precise points for consistent measurements between individuals or successive measurements in the same individual, and thus of obtaining reliable results for the orientation of the ...
Once the structures in the orbit are learned, you should then try to understand how the muscles act on the eye to move it. This knowledge is necessary in clinical situations when you examine the eye during a full physical examination or after head injuries. In order to fully understand the movements of the eyeball you should realize that the eyeball moves around three axes: (1) vertical, (2) horizontal and (3) anteroposterior. Movements around the vertical axis are abduction and adduction, around the horizontal axis, elevation and depression and around the anteroposterior axis, medial and lateral rotation. This last movement usually requires the use of special equipment to see it, so we wont consider it at this time ...
In any solution to the 2-body problem, the open orbits are the parabola (with one body at the focus) and the hyperbola (with one body at a focus, and th...
Orbit WaterMaster Underground 57078 Diaphragm, Anti-Siphon, 品牌: Orbit, Orbit Underground/Sunmate, 本 Orbit 57078 anti-siphon 维修套装,外太空自动喷洒喷洒阀门隔膜阀,零件编号的57623、57624 57223,57224和任何其他 Orbit anti-siphion 阀门。 本隔膜替换,喷洒阀 solenoids ,提供自动花园灌溉。 构造结实耐用成型材料制成,这款洒水器阀维修套装非常适合替换洒水器阀隔板, do-it-yourselfers 。 本 Orbit ...
To add some context, heres a few quick facts about LauncherOne. At 70 feet, it is twice the length of a London bus and will travel at more than 20 times the speed of sound. The rocket weighs 57,000 pounds, which is the equivalent to 25 small family cars. Launcher Ones payload will carry satellites that could be as small as a loaf of bread and as large as a household fridge. Cosmic Girl is the first 747 in history that has been converted to launch rockets. This means it can fly thousands of miles in any direction at 24 hours notice to deliver to the right orbit. Currently, people have to wait between 18 and 24 months for manufacturing and a ground launch.. A week earlier, I got to visit the team at our home in Long Beach and see the progress taking place first-hand. I also got to take a sneak peek inside Cosmic Girl too. It was amazing seeing the modified 747 looking so different from her days as part of our Virgin Atlantic fleet. Its the ultimate upcycling!. ...
Hi Hicham Lassehab On Wed, 2002-07-24 at 04:40, LASSEHAB,HICHAM (Non-HP-France,ex2) wrote: , I will begin to develop with Corba ( under Unix HP-UX ), can you help me , about : , , Which version of Orbit I should choose ? I would use ORBit2 , How can I install it ? You need to grab glib, linc and ORBit2 source packages from ftp.gnome.org in the pre-gnome2 section. , There are a doc explain How to install Corba ( ORB ) ? configure; make; make install mostly :-) Then again - you could use the existing Gnome 1.4 stuff - which I understand is available for HP, but then you would have a somewhat older and more cumbersome ORB. Id recommend using ORBit 2.4 if you can. Regards, Michael. -- [email protected] ,,,, Pseudo Engineer, itinerant idiot ...
This button sends the data point array for the actual orbit (computed by pressing the Compute Orbit I.C.s button) to DsTool. The orbit will then be displayed in any open 2-D View Window and can be sent to Geomview with the Send to Geomview Button ...
We describe a method for studying the existence and the linear stability of branches of periodic solutions for a dynamical system with a parameter. We apply the method to the planar restricted 3-body problem extending the results of [A]. More precisely, we prove the existence of some continuous branches of periodic orbits with the energy or the masses of the primaries as parameters, and provide an approximation of the orbits with rigorous bounds. We prove the linear stability or instability of the orbits.
Get Orbit Exports latest Consolidated Quarterly Results, Financial Statements and Orbit Exports detailed profit and loss accounts.
Apply to 629 Orbit Placement Jobs on Naukri.com, Indias No.1 Job Portal. Explore Orbit Placement Openings in your desired locations Now!
Synonyms for goes into orbit: jet, take a boat, set out, scour, move, proceed, take a trip, take a train, go, rove, overnight, hop, fly, visit, progress, transmit, jaunt, go abroad, tour, cover ground, make a journey, carry, sail | Antonyms for goes into orbit: dissuade, stop, remain, stay, ignore, back up, discourage, halt
People sometimes wonder why we can place objects in orbits where they always seem to be at the same point in the sky. If a nearly circular orbit is assumed, the first obvious answer is that the orbit be very have to be near the equator since, otherwise, it would bobble up and down as…
Orbit Sky View in Paikpara. Apartments in Orbit Sky View offers ✓2, 3, 4 BHK Apartments. ✓ 985.0 - 1900.0 sqft. ✓Possession - Jan, 2013. Visit Now!
Business Standard News: Net Profit : Orbit Exports Net Profit, Orbit Exports updates and more at Business Standard news. | Page 1
Derived from Mozilla.orgs Modern theme and Kent Thuressons 20020317 Orbit 3 (and Orbit v1.0 - again by Kent). Now has Orbit 3m-style small icons option and Pinball-esque smallest icons. This is MiKs special version for SeaMonkey ...
Are you looking for Orbital Lymphoma Surgery in Mumbai? We at Cosmetic & Plastic Surgery Clinic/Hospital offers Best Orbital Lymphoma Surgery in India at affordable Cost/Price by Top Facial Plastic Surgeon/ Doctor - Dr. Debraj Shome. Book an appointment online today.
Orbital and Adnexal Oncology -- Primary orbital tumors -- Metastatic orbital tumors -- Orbital tumors extending from periocular structures (brain, paranasal sinuses) -- Lacrimal gland tumors -- Primary eyelid cancers -- Conjunctival tumors -- Intraocular Tumors -- Retinoblaastoma -- Uveal melanoma -- Intraocular lymphoma -- Uveal metastatic lesions -- Retinal vascular tumors -- Ocular Surface Disease and Cornea -- Graft-vs-Host disease -- Cataract surgery in cancer patients -- Radiation-induced ocular surface disease -- Neuro-ophthalmic manifestations of Cancer -- Cranial neuropathies -- Skull based tumors -- Optic nerve tumors -- Leptomeningeal disease -- Cancer-associated retinopathy -- Neurofibromatosis -- Other optic nerve maladies in cancer patients -- Oculoplastic Surgery and Periocular Reconstructive Surgery in Cancer Patients -- Eyelid defects -- Nasolacrimal duct blockage/ Lacrimal surgery -- Eyelid malposition -- Orbital reconstruction -- Enucleation /evisceration /exenteration / ...
Interesting orbital diseases, besides tumors, include malformations and inflammatory, traumatic, degenerative and dysthyroid diseases, whose incidence depends on factors such as genetic predisposition, sex, race and, especially, age. The two leading diseases in terms of incidence are inflammatory forms and cysts, while dysthyroid orbital disease ranks third, followed by vascular malformations, which rank first for prevalence in adolescents. Traumatisms come fifth, followed by tumors in the sixth place. Until the age of 20, hemangioma is the most frequent orbital disease that alone is the fourth overall cause in terms of incidence. In the 20-60 years of age group the disease is dominated by dysthyroid orbital disease (ca 60% of cases), followed by tumors. In patients aged over 60, dysthyroid orbital disease rank first for incidence, almost at the same level with tumors. Often orbital tumors are rather hard to diagnose as the clinical events triggered by both neoplastic and non-neoplastic diseases ...
The marginal zone (MZ) was originally defined as an anatomical compartment within the spleen located around primary or secondary follicles and containing B cells with distinct phenotypic and functional characteristics. The MZ of the spleen is believed to be positioned in such a way that it primarily encounters blood borne pathogens. Later, primary mucosa-associated lymphoid tissues (MALT) of e.g. Waldeyers ring, Peyers patches and appendix, locations known for a significant influx of Ags, were also found to contain a marginal zone. MZ B cells in mice and rats express essentially unmutated IgV genes and are supposed to be non-recirculating.29 On the other hand, human MZ B cells of both spleen and Peyers patches do harbor mutated IgV genes and recirculate (Figure 2).30-32 Human splenic MZ B cells are IgM IgD and co-express the B-cell markers CD20, CD22 and CD79a/b, the memory B-cell marker CD27, the complement receptors CD18/CD11b, CD21 and CD35, and the anti-apoptotic molecule BCL-2. MZ B ...
David H. Song, M.D., M.B.A. is the President-elect of the American Society of Plastic Surgeons (ASPS). He is a consultant with BioMet, Emmi Solutions, LLC, a consortium-member providing senior debt for Brava, and consultant with and investor in HealthEngine.com. He receives author royalties from Elsevier. Scot Glasberg, M.D. is the President of the American Society of Plastic Surgeons (ASPS). He is a consultant with LifeCell Corp and Mentor Corp and an investor with Strathspey Crown. The authors have no sources of funding to report related to the writing or submission of this discussion.. The location and affiliation information should read as follows: Arlington Heights, Ill. From the American Society of Plastic Surgeons/Plastic Surgery Foundation.. David H. Song, M.D., M.B.A., 444 E. Algonquin Rd. Arlington Heights, IL 60005, [email protected] ...
Looking for or discovering an orbital mass may raise many questions. To provide at least partial answers, we will target the most frequent pathologies encountered and propose for each of them a practical presentation including specific clinical tips, imaging protocol and characteristic features. The lesion may be disclosed during a brain Computed Tomography (CT) or Magnetic Resonance Imaging (MRI), or alternatively looked for because it causes symptoms such as exophthalmos and visual or oculomotor alteration. Imaging plays a major part in etiological diagnosis and patient management. If MRI remains the principal imaging method, CT scan and ultrasound (US) with Colour Doppler flow imaging (CDFI) may be very helpful. These different imaging techniques may be associated, depending on the lesion. The orbital MRI protocol performed in our institution includes the following sequences: thin (3 mm) axial T1-weighted, coronal T2-weighted or T2-weighted Dixon, axial diffusion-weighted, then after contrast ...
We read with great interest the Clinicopathologic Report by Choi et al that reported a case of orbital Ewing sarcoma in a 43-year-old woman. The authors believe
Orbital lesions form a wide range of pathologies that pose challenges in diagnosis, management and treatment. The soft tissue detail provided by magnetic resonance imaging (MRI) allows for better lesion characterization. MRI therefore plays a crucial role, especially in cases where history and clinical evaluation are inconclusive [1]. There are several approaches for the correct diagnosis of orbital pathology. A common diagnostic strategy is the localization of the pathology into the four main orbital compartments [2]: the ocular compartment or globe, the muscle cone and the intraconal and extraconal spaces (Figure 1). The muscle cone contains recti muscles and their fasciae; on its base, the globe is present, and the optic canal figures the apex. The globe is encircled by the Tenons capsule, which has three layers: the sclera, uvea and retina. The extraconal space includes the superior and inferior oblique muscles, levator muscle complex, the lacrimal gland and the orbital fat. The aim of this ...
E-mail: [email protected] Following a complete preoperative study that did not contraindicate surgery, a decision was taken to operate the patient with general anesthesia using a bicoronal approach from the ipsilateral preauricular region to the contralateral preauricular region, separating the skin mass underneath the subperiosteal and temporal fascia and starting from the zygomatic arch and frontal eminence. An approach was made through the entire external rim of the right orbit and right malar area, together with an osteotomy of the malar bone (lateral orbitotomy). The periorbit was then incised and an intraconal approach was made to the lesion, which had the appearance of a hemangioma and was well defined. It was resected and the surrounding tissue pulled away. The reconstruction of the zygomatic arch and the frontal eminence was carried out with flat miniplates.. The macroscopic examination of the histologic study showed a nodular formation with a diameter of 2.5 cm, which was well ...
You may think that most objects in space that orbit something else move in circles, but that isnt the case. Although some objects follow circular orbits, most orbits are shaped more like stretched out circles or ovals. Mathematicians and astronomers call this oval shape an ellipse.. An ellipse can be very long and thin, or it can be quite round - almost like a circle. Scientists use a special term, eccentricity, to describe how round or how stretched out an ellipse is. If the eccentricity of an ellipse is close to one (like 0.8 or 0.9), the ellipse is long and skinny. If the eccentricity is close to zero, the ellipse is more like a circle.. The eccentricity of Earths orbit is very small, so Earths orbit is nearly circular. Earths orbital eccentricity is less than 0.02. The orbit of Pluto is the most eccentric of any planet in our Solar System. Plutos orbital eccentricity is almost 0.25. Many comets have extremely eccentric orbits. Halleys Comet, for instance, has an orbital ...
Interactions greater than 20 kJ/mol for bonding and lone pair orbitals are listed below. The interaction of the second bonding donor orbital, 2, for P1-O2 with the third antibonding acceptor orbital, 83, for P1-O2 is 144. kJ/mol. The interaction of the second bonding donor orbital, 2, for P1-O2 with the antibonding acceptor orbital, 84, for P1-O3 is 119. kJ/mol. The interaction of the third bonding donor orbital, 3, for P1-O2 with the second antibonding acceptor orbital, 82, for P1-O2 is 230. kJ/mol. The interaction of bonding donor orbital, 4, for P1-O3 with the second antibonding acceptor orbital, 82, for P1-O2 is 252. kJ/mol. The interaction of bonding donor orbital, 4, for P1-O3 with the third antibonding acceptor orbital, 83, for P1-O2 is 26.8 kJ/mol. The interaction of bonding donor orbital, 5, for O3-H4 with the second antibonding acceptor orbital, 82, for P1-O2 is 24.9 kJ/mol. The interaction of lone pair donor orbital, 15, for O3 with the third antibonding acceptor orbital, 83, for ...
Interactions greater than 20 kJ/mol for bonding and lone pair orbitals are listed below. The interaction of lone pair donor orbital, 9, for O2 with the antibonding acceptor orbital, 96, for C1-O4 is 44.3 kJ/mol. The interaction of the second lone pair donor orbital, 10, for O2 with the antibonding acceptor orbital, 95, for C1-F3 is 277. kJ/mol. The interaction of the second lone pair donor orbital, 10, for O2 with the antibonding acceptor orbital, 96, for C1-O4 is 68.0 kJ/mol. The interaction of the third lone pair donor orbital, 13, for F3 with the second antibonding acceptor orbital, 94, for C1-O2 is 57.9 kJ/mol. The interaction of lone pair donor orbital, 14, for O4 with the antibonding acceptor orbital, 93, for C1-O2 is 44.3 kJ/mol. The interaction of the second lone pair donor orbital, 15, for O4 with the antibonding acceptor orbital, 93, for C1-O2 is 68.0 kJ/mol. The interaction of the second lone pair donor orbital, 15, for O4 with the antibonding acceptor orbital, 95, for C1-F3 is 277. ...
Chemistry Assignment Help, What are molecular orbitals, What are molecular orbitals? How are they formed? What does molecular orbital theory states? what is the significance of molecular orbital theory? Ans) Molecular orbitals are formed when atomic orbitals of equal energy hybrize. MOT states that n
The effect of orbit plane precession is used to place a plurality of satellites into one or more desired orbit planes. The satellites are distributed within each desired orbit plane in a selected configuration. The satellites are transported into orbit on one or more frame structures referred to as pallets. When more than one pallet is used, they are placed on top of each other in a stack. After the stack of the pallets has been launched into an initial, elliptical orbit, the pallets are separated sequentially from the stack at selected time intervals. Thrust is applied to transfer a first pallet from the initial orbit to a first, circular orbit, wherein the initial and first orbits are in planes that process at different predetermined initial and first rates, respectively. After waiting for a predetermined time while the initial orbit plane and the first orbit plane precess with respect to each other, thrust is applied to the next pallet to transfer it into a next, circular orbit in a next orbit
Only 2 of the 2p orbitals are used in sp2 hybridisation; in contrast to the 3 used in sp3 hybridisation (you should be seeing where the numbers come from!).. This leaves us with 3 sp3-orbitals and 1 p-orbital to bond with. 2 of the sp3 orbitals are used for forming σ-bonds with the 2 hydrogens, while the remaining sp3 orbital binds with the other carbon to form a σ-bond and the p-orbital bonds with a p-orbital from the other carbon to form a π-bond.. Every double bond (regardless of what atoms it joins) consists of a π-bond and a σ-bond.. ...
The value of l corresponds to a specific subshell. l= 0 is the s subshell, l=1 is the p subshell, and l=2 is the d subshell. The s subshell has one orbital, the p subshell has 3 orbitals, and the d subshell has 5 orbitals. So, the value of l corresponds to a specific subshell which corresponds to a specific number of orbitals ...
Diagnosis Code H05.041 information, including descriptions, synonyms, code edits, diagnostic related groups, ICD-9 conversion and references to the diseases index.
This month we had Simon and Alejandro attending from the Royal Veterinary College, as well as Sam from our own department. We reviewed a few orbital tumours, and some corneal and intraocular specimens with keratitis and/or endophthalmitis. Here are a few highlights. Case 1 Elderly patient with a brow lesion. This is keratinising well-differentiated squamous…
Orbitals may contain only two electrons each. Electrons move around in orbitals, which are areas where electrons have a high possibility of being found. Orbitals are grouped together into energy...
None of what youve learned so far is wrong. However, your understanding of bonding in covalent compounds isnt yet complete. Specifically, while we know that electrons are shared between two atoms in a covalent molecule, we dont have any ideas about the locations of these electrons. As you might imagine, theyre located within orbitals, but what sort of orbitals exist between two atoms?. Why are orbitals important? As it turns out, covalent bonds are formed when two orbitals from different atoms, each of which have one electron in them, overlap so that these two electrons are shared. Because these orbitals need to overlap for a bond to be formed, its important that we understand the shapes of orbitals that are formed in covalent compounds.. Before we can fully understand the true nature of orbitals in covalent compounds, we must see whats incomplete about our current understanding of orbitals and electrons. Imagine CH4. The type of diagram we saw in Getting to Know Covalent Compounds makes ...
Orbits are presented for four ninth-magnitude stars about which the only spectroscopic datum previously known is the HD type, K0 in each case. The most interesting of the four stars is perhaps HD 145677, whose lack of proper motion suggests a high luminosity, which is hardly compatible with the shortness (4.4 days) of its orbital period.
A few words of warning are in order! First, all calibration candidate orbits are NOT of the same quality, however much we would like them to be! Before using a set of elements please examine the elements, figures, etc. carefully to check whether that orbit appears to be of proper scale and sufficient quality for your purposes. Also, using measurements of double stars to calibrate the measurement of other double stars is certainly circular (or, if you will, Keplerian). We strongly advocate the use of other absolute calibration techniques such as a slit mask (cf, McAlister et al. 1987, AJ, 93, 688; Hartkopf et al. 1997, AJ, 114, 1639; or Douglass et al. 1997, ApJS, 111, 289) or at least star trails (for east-west orientation) if at all possible. When double stars are necessary for scale calibration, the set provided should be adequate; however, the measures you determine will only be as accurate as the calibration systems you use. The use of these systems for identification of higher-order ...
Ciena Blue Planet has today added six new members to our Blue Orbit Ecosystem. Unlike other partner programs, 100% of the partners in Blue Orbit are working with Ciena and our Blue Planet Network Orchestration Software.
Examples: Satellite television broadcasting, weather and reconnaissance satellites.. A geosynchronous orbit is one that is in sync with the rotation of Earth: it takes geosynchronous satellites exactly one day to complete one orbit. If a geosynchronous satellite is placed in the same plane as the equator then that satellite is said to be geostationary - relative to an observer on Earth it remains in the same place in the sky all the time. This means that the antennae used to communicate with geostationary satellites can remain in a fixed position - they do not have to move to track the satellite as it moves across the sky.. The idea of a geostationary satellite was popularised by the science fiction author Arthur C. Clarke in an article for Wireless World magazine entitled Extra-Terrestrial Relays - Can Rocket Stations Give World-wide Radio Coverage? so geostationary orbits are sometimes known as Clarke Orbits.. Calculating the height of a geostationary orbit is relatively simple. Any object ...
The state of an orbiting body at any given time is defined by the orbiting bodys position and velocity with respect to the central body, which can be represented by the three-dimensional Cartesian coordinates (position of the orbiting body represented by x, y, and z) and the similar Cartesian components of the orbiting bodys velocity. This set of six variables, together with time, are called the orbital state vectors. Given the masses of the two bodies they determine the full orbit. The two most general cases with these 6 degrees of freedom are the elliptic and the hyperbolic orbit. Special cases with fewer degrees of freedom are the circular and parabolic orbit. Because at least six variables are absolutely required to completely represent an elliptic orbit with this set of parameters, then six variables are required to represent an orbit with any set of parameters. Another set of six parameters that are commonly used are the orbital elements. ...
Geostationary Orbit, 978-613-3-86154-1, Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A geostationary orbit is a geosynchronous orbit directly above the Earths equator, with a period equal to the Earths rotational period and an orbital eccentricity of approximately zero. These characteristics are required so that, from locations on the surface of the Earth, geostationary objects appear motionless in the sky, making the GEO an orbit of great interest to operators of communications and weather satellites. Due to the constant 0° latitude and circularity of geostationary orbits, satellites in GEO differ in location by longitude only. The notion of a geosynchronous satellite for communication purposes was first published in 1928 by Herman Potodnik. The idea of a geostationary orbit was first published on a wide scale in a paper entitled Extra-Terrestrial Relays - Can Rocket Stations Give Worldwide Radio Coverage? by Arthur
What is Orbit & Oculoplasty? Orbit refers to the eye-socket (the cavity in the skull that holds the eye) and the surrounding structures. Diseases of the Orbit may arise from within the eye-socket or might be a secondary condition arising out of an existing illness. While some of these issues could be cosmetic, quite a few of orbital problems might affect the regular functioning of the eyes. Theres sure relief for these conditions and oculoplasty is a cosmetic/reconstructive surgical procedure that comes to the rescue of patients with eye orbit problems. Orbit - Things that cant be overlooked Its quite natural to admire those almond-shaped eyes of your child for hours. However, not all people in the world are lucky to have those perfectly shaped eyes. Some of us may have problems like drooping eyelids, protruding eyes, inturned eyelashes, etc. Earlier, people would have to live with these malformations. However today, there are state-of-the-art treatment options that can rectify the issues. It ...
AP Chemistry Chapter 9 - Covalent Bonding: Orbitals 1. Hybridization and the Localized Electron Model a. Hybridization i. The mixing of two or more atomic orbitals of similar energies on the same atom
Shapes of orbital: s-orbital: For s orbital, l = 0 and m = 0. This shows that the probability of locating the electron is independent of the direction from
The result of a solution for the radial part of the Schrödinger equation is a three dimensional function which can be observed here. Therefor the probability distribution will be calculated for the chosen quantum numbers and all points at an specific threshold are connected to build the hydrogen hyperplane which then can be visualised. .cdf Hydrogen orbitals .nb Hydrogen orbitals ...
The result of a solution for the radial part of the Schrödinger equation is a three dimensional function which can be observed here. Therefor the probability distribution will be calculated for the chosen quantum numbers and all points at an specific threshold are connected to build the hydrogen hyperplane which then can be visualised. .cdf Hydrogen orbitals [1] .nb Hydrogen orbitals [2] ...
But for science that is not accurate enough since we know the the earths rotation and orbit are slowing down. Since 1967 the second has been defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom. In 1997 CIPM added that the periods would be defined for a caesium atom at rest, and approaching the theoretical temperature of absolute zero, and in 1999, it included corrections from ambient radiation ...
The US is short of ventilators to help Covid-19 patients breathe. Ford, GM, and satellite-launch company Virgin Orbit are trying to fill the gap.
Orbit vs Orbital In atomic theory, these two similar-sounding terms orbit and orbital often confuse people. You must have seen in pictures that an atom is a
Orbital mass in a young adult This is a low power image. The tumour is solid (as opposed to eg cystic or nested). There are prominent vascular spaces with an irregular staghorn profile. In the annotated image, Ive outlined a few of the irregular vessels in green. In this higher power field, we see the…
Synonyms: proptosis, exorbitism The term exophthalmos is derived from Greek, literally meaning with prominent eyes . It refers to the protrusion of one...
Ocular oncology is a review of: • eye and orbital neoplasms, • diagnostic and therapeutic methods used today, with particular emphasis on radiotherapy and surger...
These Orbit Resin Awards features unique design elements. Using a combination of colors, sport and activity specific icons in addition to negative space creates a dynamic look to these awards. All of the Orbit series awards feature a large star that rises up from the base as a focal point for the sport and activity icons. The Orbit series comes in wide variety or sports and academic activities. All of the Orbit series awards stand 4 1/2 tall and the gold antique colored base has plenty of room for what ever your personalization needs might be. These are the perfect awards for your next awards presentation. Orbit Resin Trophy Awards ...
Exophthalmos refers to a protruding eyeball. It is not a disorder, but it is normally a sign of a problem related to the thyroid gland.
How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!
The delocalization of σ-electrons or lone pair of electrons into adjacent π-orbital or p-orbital is called hyperconjugation. It occurs due to overlapping of σ-bonding orbital or the orbital containing a lone pair with adjacent π-orbital or p-orbital. It is also known as no bond resonance or Baker-Nathan effect. ...
Orbital® Payment Gateway. Establish secure online transaction processing through our fully integrated Orbital modular product suite. The Orbital suite of products is fully customisable - you can select the services to add to your Gateway account that best meet your business needs, including tools for tokenisation, billing management and for Mail Order and Telephone Order transactions through a Virtual Terminal.. Collect credit card orders by phone, or via mail, then log onto Orbital® Virtual Terminal on your computer. From there, you can initiate card authorisations or refunds, settle authorised transactions and perform transaction and account administration.. Dynamic Hosted Payments Page. Protect your customers payment account data while providing the flexibility to create a seamless checkout experience. The consumer enters payment data directly into our secure servers, so your company never has to receive or store this data. This simple integration can be implemented as a payment page or ...
These completely solid-state Orbital Mixing Chilling/Heating Dry Baths are compact, versatile, reliable and easy to use. They are completely solid state and very rugged. There are more than 30 standard sample blocks available as accessories for use with assay plates, centrifuge tubes, vials, test tubes and more. Custom sample blocks can be made for any sample container.. Units come complete with instruction manual, universal bench top power supply for use anywhere in the world and AC line cord for the country of use. Sample blocks and covers are available as accessories.. ...
Any recommendations on a decent orbital buffer? Wondering if Northern Tool may have one that would be suitable for use 4 or 5 times a year. Would also like...
There is also an emerging body of evidence to suggest implications of SF3B1 mutations being involved in orbital melanoma. ... "Clinical significance of SF3B1 mutations in myelodysplastic syndromes and myelodysplastic/myeloproliferative neoplasms". Blood ... which is a myelodysplastic syndrome/myeloproliferative neoplasm). ...
... measurement is taken from the lateral orbital rim to the corneal apex. If a patient presents with an orbital fracture or after ... a sign of blow-out fracture or certain neoplasms. There are several types of exophthalmometers, Hertel and Luedde measure the ... The device allows measurement of the forward distance of the lateral orbital rim to the front of the cornea. Exophthalmometers ... Luedde exophthalmometer fixes on lateral orbital wall and uses a transparent ruler to measure the amount of protrusion. The ...
This neoplasm is usually located within the muscle cone, which is lateral to the optic nerve. It is not usually treated unless ... In the eye, it is known as orbital cavernous hemangioma and is found in women more frequently than men, most commonly between ...
... superior orbital fissure and/or orbital apex. Inflammatory change of the orbit on cross sectional imaging in the absence of ... Sometimes a biopsy may need to be obtained to confirm the diagnosis, as it is useful in ruling out a neoplasm. Differentials to ... Tolosa-Hunt syndrome (THS) is a rare disorder characterized by severe and unilateral headaches with orbital pain, along with ... cavernous sinus and superior orbital fissure). THS is usually diagnosed via exclusion, and as such a vast amount of laboratory ...
... and primary and metastatic orbital neoplasms. Dr. Karcioglu is also residency and fellowship trained in Anatomic Pathology and ... International Society of Orbital Disorders (ISOD) International Society for Eye Research (ISER) Research to Prevent Blindness ...
... nose neoplasms MeSH C05.116.231.754.659 --- orbital neoplasms MeSH C05.116.231.754.829 --- skull base neoplasms MeSH C05.116. ... femoral neoplasms MeSH C05.116.231.754 --- skull neoplasms MeSH C05.116.231.754.450 --- jaw neoplasms MeSH C05.116.231.754. ... mandibular neoplasms MeSH C05.500.499.601 --- maxillary neoplasms MeSH C05.500.499.692 --- palatal neoplasms MeSH C05.500. ... 450.583 --- mandibular neoplasms MeSH C05.116.231.754.450.601 --- maxillary neoplasms MeSH C05.116.231.754.450.692 --- palatal ...
... nose neoplasms MeSH C04.588.149.721.656 --- orbital neoplasms MeSH C04.588.149.721.828 --- skull base neoplasms MeSH C04.588. ... conjunctival neoplasms MeSH C04.588.364.659 --- orbital neoplasms MeSH C04.588.364.818 --- retinal neoplasms MeSH C04.588. ... anal gland neoplasms MeSH C04.588.274.476.411.445 --- duodenal neoplasms MeSH C04.588.274.476.411.501 --- ileal neoplasms MeSH ... femoral neoplasms MeSH C04.588.149.721 --- skull neoplasms MeSH C04.588.149.721.450 --- jaw neoplasms MeSH C04.588.149.721. ...
... eyelid neoplasms MeSH C11.319.457 --- orbital neoplasms MeSH C11.319.475 --- retinal neoplasms MeSH C11.319.475.760 --- ... orbital MeSH C11.675.659 --- orbital neoplasms MeSH C11.675.700 --- retrobulbar hemorrhage MeSH C11.710.090 --- anisocoria MeSH ... iris neoplasms MeSH C11.941.375.385 --- iritis MeSH C11.941.855 --- uveal neoplasms MeSH C11.941.855.198 --- choroid neoplasms ... choroid neoplasms MeSH C11.319.494.400 --- iris neoplasms MeSH C11.338.133 --- blepharitis MeSH C11.338.190 --- ...
MRI (magnetic resonance imaging) provides more sensitivity in the evaluation of the cavernous sinus and the orbital apex. One ... superior information as compared to CT scans when seeking information about headache to confirm a diagnosis of neoplasm, ... and evaluation of the orbital apex and cavernous sinus. Magnetic resonance imaging (MRI) of the head provides ...
... the orbital surface of zygomatic bone and the minute orbital process of palatine bone. Medially, near the orbital margin, is ... Injury to any one of these structures by infection, trauma or neoplasm can cause temporary or permanent visual dysfunction, and ... The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone. The roof ( ... It provides a pathway between the orbital contents and the middle cranial fossa. The superior orbital fissure lies just lateral ...
Its former name, orbital pseudotumor, is derived due to resemblance to a neoplasm. However, histologically it is characterized ... Idiopathic orbital inflammatory syndrome, also known as orbital pseudotumor, was first described by Gleason in 1903 and by ... Idiopathic orbital inflammatory (IOI) disease, or orbital pseudotumor, refers to a marginated mass-like enhancing soft tissue ... Orbital inflammation and infection versus neoplasia. In: Karcioglu ZA, ed. Orbital Tumors: Diagnosis and Treatment. New York: ...
The most common orbital malignancy is orbital lymphoma. This tumor can be diagnosed by biopsy with histopathologic and ... Eye neoplasms can affect all parts of the eye, and can be a benign tumor or a malignant tumor (cancer). Eye cancers can be ... Large deep orbital dermoid cysts can cause pressure effects on the muscles and optic nerve, leading to diplopia and loss of ... Orbital dermoid cysts are benign choristomas which are typically found at the junction of sutures, most commonly at the fronto- ...
Schwope, RB; Reiter, MJ; Lisanti, CJ (Feb 2015). "Mimickers of neoplasm on abdominal and pelvic CT". Abdom Imaging. 40 (2): 400 ... "Postoperative imaging of the orbital contents". Radiographics. 35 (1): 221-34. doi:10.1148/rg.351140008. Lisanti, CJ; Toffoli, ...
... neoplasm protein - Nernst equation - nerve - nerve growth factor - nerve growth factor receptor - nerve tissue protein - nerve ... atomic orbital - atomic radius - Atomic weight - ATP synthase - ATPase - atrial natriuretic factor - atrial natriuretic factor ... Molecular orbital - molecular phylogeny - molecular sequence data - Molecule - Monoamine - monoclonal antibody - Monomer - ...
... orbital tissues, nasal mucosa and others. In skin, the lesions of SH and CH are virtually identical - they consist of ... histiocytic neoplasm which arises in multiple sites simultaneously. Most lesions previously defined as MH are probably more ... cutaneous neoplasm in dogs. Histiocytomas usually occur as solitary lesions, which spontaneously regress, and seldom recur. ...
Lhermitte used this study to attribute UB to damage of the orbital frontal structures and the caudate nuclei. It should be ... neoplasm, and corticobasal degeneration. The frontal lobe is responsible for problem solving, motor function, memory, judgment ...
... orbital fractures MeSH C21.866.260.275.500.950 --- zygomatic fractures MeSH C21.866.260.382 --- head injuries, closed MeSH ... neoplasms, radiation-induced MeSH C21.866.733.579 --- osteoradionecrosis MeSH C21.866.733.720 --- radiation injuries, ... orbital fractures MeSH C21.866.404.750.821 --- skull fracture, basilar MeSH C21.866.404.750.890 --- skull fracture, depressed ...
... which occurs secondary to erosion into superior orbital fissure and due to third and sixth nerve palsy. Proptosis when having ... benign neoplasm) Rhinosporidiosis (as bleeding point is here too) Malignancy-nasopharyngeal carcinoma, lymphoma, plasmacytoma, ...
... orbital (377) Disorders of optic nerve and visual pathways (377.0) Papilledema (377.00) Papilledema unspecified (377.01) ... Disorders of visual cortex associated with neoplasms (377.72) Disorders of visual cortex associated with vascular disorders ( ...
... neoplasm seeding MeSH C23.550.727.650.895 --- neoplasms, unknown primary MeSH C23.550.727.655 --- neoplasm recurrence, local ... orbital MeSH C23.550.382.875.750 --- granuloma, plasma cell, pulmonary MeSH C23.550.382.937 --- granuloma, pyogenic MeSH ... neoplasm metastasis MeSH C23.550.727.650.560 --- lymphatic metastasis MeSH C23.550.727.650.645 --- neoplasm circulating cells ... MeSH C23.550.727.670 --- neoplasm regression, spontaneous MeSH C23.550.727.700 --- neoplasm, residual MeSH C23.550.737.500 --- ...
So potent is honokiol's pro-apoptotic effects that it overcomes even notoriously drug resistant neoplasms such as multiple ... or aromatic pi orbital co-valency. It is hydrophobic and readily dissolved in lipids. It is structurally similar to propofol. ...
2010;70:841-58 Brook I. Microbiology and antimicrobial treatment of orbital and intracranial complications of sinusitis in ... malignant neoplasms intestinal obstruction; decubitus ulcers; dental extraction; sickle cell disease; diabetes mellitus; ...
Saito K, Katsumata Y, Hirabuki T, Kato K, Yamanaka M (2007). "Fetus-in-fetu: parasite or neoplasm? A study of two cases". Fetal ... Orbital dermoid cyst at eMedicine Elsevier, Dorlands Illustrated Medical Dictionary, Elsevier. Harding MJ, Paul J, Gillis CR, ... It can be confused with other small round cell neoplasms such as neuroblastoma, small cell carcinoma of hypercalcemic type, ... Saba, Luca; Acharya, U. Rajendra; Guerriero, Stefano; Suri, Jasjit S. (2014). Ovarian Neoplasm Imaging. Springer Science & ...
Orbital tumors often present with orbital swelling and proptosis. Extremity tumors generally present as a rapidly enlarging, ... and other neoplasms". Science. 250 (4985): 1233-1238. doi:10.1126/science.1978757. ISSN 0036-8075. PMID 1978757. Bisogno, G.; ...
Neoplasms - malignant and benign tumors Septal hematoma - a mass of (usually) clotted blood in the septum Toxins - chemical ... conveys sensation to the skin areas of the lateral orbital (eye socket) region, except for the lacrimal gland. Frontal nerve - ...
neoplasm: e.g., metastases, lymphoma, hamartoma. *sarcoidosis. *alveolitis. *auto-immune disease: e.g., granulomatosis with ...
Nervous tissue tumors/NS neoplasm/Neuroectodermal tumor (ICD-O 9350-9589) (C70-C72, D32-D33, 191-192/225) ... MRI showing orbital and skull vault metastatic NB in 2-year-old ...
... superior information as compared to CT scans when seeking information about headache to confirm a diagnosis of neoplasm, ...
The most common orbital malignancy is orbital lymphoma. This tumor can be diagnosed by biopsy with histopathologic and ... Eye neoplasms can affect all parts of the eye, and can be a benign tumor or a malignant tumor (cancer). Eye cancers can be ... Orbital dermoid cysts are benign choristomas which are typically found at the junction of sutures, most commonly at the fronto- ... Large deep orbital dermoid cysts can cause pressure effects on the muscles and optic nerve, leading to diplopia and loss of ...
... the orbital surface of zygomatic bone and the minute orbital process of palatine bone. Medially, near the orbital margin, is ... Injury to any one of these structures by infection, trauma or neoplasm can cause temporary or permanent visual dysfunction, and ... The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone.[7] ... There is a supraorbital foramen, an infraorbital foramen, a superior orbital fissure, an inferior orbital fissure and the optic ...
Lacrimal nerve - conveys sensation to the skin areas of the lateral orbital (eye socket) region, except for the lacrimal gland. ... Neoplasms - malignant and benign tumors. *Septal hematoma - a mass of (usually) clotted blood in the septum ... The panda eyes (orbital discoloration) is consequent to trauma and ocular blood vessel disruption. ...
Isolated Shwannoma Arising From One of the Peripheral Orbital Nerve-A Rare Clinical Entity - Free download as PDF File (.pdf), ... Here we present a rare case of orbital schwanama arising one. of the inferior orbital nerve .. Keywords: orbital, schwannoma, ... Abstract: A rare case of orbital schwannoma arising from one of the inferior orbital peripheral nerve is. presented. An ... Schwannomas constitutes approximately 1% of all orbital tumours [1].. Orbital Schwannomas usually presents between 20 to 70 ...
Primary Orbital HemangiopericytomaAn Aggressive and Potentially Malignant Neoplasm. John W. Henderson, MD; George M. Farrow, MD ... Primary Orbital HemangiopericytomaAn Aggressive and Potentially Malignant Neoplasm. Arch Ophthalmol. 1978;96(4):666-673. doi: ... The neoplasm is not common in the orbit, and reports in the ophthalmic literature usually describe single-case examples of the ... In the orbit, those neoplasms frequently are circumscribed in their growth. Complete and intact removal is recommended. If the ...
Orbital Neoplasms. Skull Neoplasms. Bone Neoplasms. Neoplasms by Site. Neoplasms. Eye Neoplasms. Bone Diseases. Musculoskeletal ... Orbital masses develop at the expense of the orbital structures lacrimal glands, oculomotor muscles, optic nerve, meningeal ... MRI Perfusion Curves Typology and Orbital Tumors (PERFORM) (PERFORM). The safety and scientific validity of this study is the ... Validation, for Orbital Tumors, of the MRI Perfusion Curves Typology Established for Salivary Tumors. ...
Orbital Neoplasms. Skull Neoplasms. Bone Neoplasms. Neoplasms by Site. Neoplasms. Eye Neoplasms. Bone Diseases. Musculoskeletal ... Multiparametric Characterization of Orbital Tumors by MRI. The safety and scientific validity of this study is the ... multiparametric characterization of orbital tumors by MRI [ Time Frame: 24 months ]. The level of diffusion and perfusion ( ... Prospective study on patients with orbital tumors of unknown origin. Aim of the study is to differentiate benign from malignant ...
Vascular hamartomas, hyperplasias, and neoplasms. Henderson GW, ed. Orbital Tumors. New York: Raven Press; 1994. 94-100. ... encoded search term (Orbital Cavernous Hemangioma) and Orbital Cavernous Hemangioma What to Read Next on Medscape. Related ... Orbital Cavernous Hemangioma Workup. Updated: Aug 14, 2017 * Author: Adam J Cohen, MD; Chief Editor: Hampton Roy, Sr, MD more ... Orbital surgery service then opened the periorbita over a bulge (double black arrows) between optic nerve and cranial nerves ( ...
... ... Classification of Orbital Neoplasm:. A) Orbital Neoplasm In children:. 1. Hamartoma and choristoma. ...
Orbital Rhabdomyosarcoma Infiltrating the Bone Marrow: A Potential Mimic of a Haematopoietic Neoplasm Authors (first, second ... Blastic Plasmacytoid Dendritic Cell Neoplasm: Single Center Experience on a Rare Hematological Malignancy Authors (first, ...
Nasal cavity neoplasms may also spread into the medial orbit after invading the ethmoid air cells. Neoplasms with a ... into the orbital apex. On CT, early orbital involvement shows infiltration and soft tissue stranding in the orbital fat ... Orbital complications appear most often in frontal or ethmoid sinusitis and are most common in children.1 In adults, orbital ... The incidence of orbital involvement by SN disease is much more common than sinus involvement by orbital disease. We will ...
Malignant Neoplasm of Eye. *Migraine. *Orbital Cellulitis. *Pterygium. *Stye. *Tear Duct Disorders ...
Malignant Neoplasm of Eye. *Orbital Cellulitis. *Retina Diseases. *Retinal Detachment and Retinal Tear ...
February 2010 CASE REPORT Orbital myiasis complicating squamous cell carcinoma of eyelid CS Wong, Tiffany YC Chu, KF Tam ... Key words: Neurilemmoma; Radiography, abdominal; Retroperitoneal neoplasms; Tomography, X-ray computed. View this abstract ... We report a case of orbital myiasis from the species Chrysomya bezziana complicating squamous cell carcinoma of the eyelid. ... In extensive orbital myiasis, exenteration is needed to prevent intracranial extension of tissue destruction. ...
The most common orbital malignancy is orbital lymphoma. This tumor can be diagnosed by biopsy with histopathologic and ... Eye neoplasms can affect all parts of the eye, and can be a benign tumor or a malignant tumor (cancer). Eye cancers can be ... Large deep orbital dermoid cysts can cause pressure effects on the muscles and optic nerve, leading to diplopia and loss of ... Orbital dermoid cysts are benign choristomas which are typically found at the junction of sutures, most commonly at the fronto- ...
i,Conclusion,/i,. The orbital location is extremely rare, especially in the pediatric population. The management of desmoid ... the orbital content was resected together with the neoplasm. An excision with negative margins was achieved. The neoplasm, in ... Orbital exenteration is a radical procedure consisting of removal of the orbital contents including orbital fat, conjunctival ... The possibility to perform an eyelid-sparing orbital exenteration and the surgical resection of the neoplasm with immediate ...
OR Eye Neoplasm[tiab] OR Eye Neoplasms[tiab] OR EYE PAIN[tiab] OR Eye swelling[tiab] OR Eyelid Disease[tiab] OR Eyelid Diseases ... OR Orbital Diseases[tiab] OR PAPILLOEDEMA[tiab] OR Partial sight[tiab] OR Partial vision loss[tiab] OR Partially Sighted[tiab] ... OR Ocular neoplasms[tiab] OR oculopathy[tiab] OR Open wound of ocular adnexa[tiab] OR OPHTHALMIC DISORDERS[tiab] OR ... "eye neoplasms"[MeSH Terms] OR "eyelid diseases"[MeSH Terms] OR "hemianopsia"[MeSH Terms] OR "lacrimal apparatus diseases"[MeSH ...
This workshop summary highlights the role of molecular genetic testing in the diagnosis of lymphoid neoplasms, as well as its ... Table 6. Histiocytic Neoplasms Case No.. Panel Diagnosis. Genetic Findings. 135. Orbital mass: Langerhans cell histiocytosis ( ... Low-grade lymphoid neoplasms with genetic events associated with aggressive biology. 36. Chronic lymphocytic leukemia. t(8;14 ... T-cell neoplasms. FISH for inv(14), iso(7q), ALK, DUSP22, TP63 rearrangement. ...
Key words: Orbital neoplasms; Needle biopsy; Computed tomography; Diagnosis. RESUMO. Biópsia percutânea guiada por tomografia ... Orbital melanocytoma. Orbit. 2008;27:383-7. [ Links ] Gupta S, Sood B, Gulati M, et al. Orbital mass lesions: US-guided fine- ... Thinning of the adjacent orbital roof bone was observed.. Figure 1 Case 1 - Imaging findings in a 56-year-old patient with an ... However, few reports in the literature report the use of CT-guided core biopsy for the diagnosis of orbital lesions(8,10). ...
Orbital Neoplasms / surgery. Retrospective Studies. Waiting Lists*. From MEDLINE®/PubMed®, a database of the U.S. National ... Eye Neoplasms / surgery*. Eyelid Neoplasms / surgery. Female. Humans. Lacrimal Apparatus Diseases / surgery. Male. Middle Aged ... The longest mean total waiting time averaged 94.16 (SE 18.69) days for patients with orbital or lacrimal tumours. For all ... Conjunctival Neoplasms / surgery. Delivery of Health Care / statistics & numerical data. ...
Neoplasms, Neuroepithelial / diagnosis* * Optic Nerve Neoplasms / diagnosis* * Orbital Neoplasms / diagnosis* * Practice ...
Its former name, orbital pseudotumor, is derived due to resemblance to a neoplasm. However, histologically it is characterized ... Idiopathic orbital inflammatory syndrome, also known as orbital pseudotumor, was first described by Gleason in 1903 and by ... Idiopathic orbital inflammatory (IOI) disease, or orbital pseudotumor, refers to a marginated mass-like enhancing soft tissue ... Orbital inflammation and infection versus neoplasia. In: Karcioglu ZA, ed. Orbital Tumors: Diagnosis and Treatment. New York: ...
... neoplasm, lacrimal system disorder, penetrating injury, cataract, IOL complications, neuro-ophthalmic disease, retinal ... neoplasm, lacrimal system disorder, penetrating injury, cataract, IOL complications, neuro-ophthalmic disease, retinal ... ocular and orbital trauma, keratitis, open-angle glaucoma, closed angle glaucoma, ... ocular and orbital trauma, keratitis, open-angle glaucoma, closed angle glaucoma, ...
We present the case of a symptomatic orbital mucocele arising from contralateral sinus disease that crossed the midline upon ... orbital pseudotumor, thyroid ophthalmopathy, and lacrimal gland neoplasm. ... Tailor, R.; Obi, E.; Burns, J.; Sampath, R.; Durrani, O.M.; Ford, R. Fronto-orbital mucocele and orbital involvement in occult ... Contralateral Orbital Mucocele as a Complication of Unilateral Nasal Polyposis. by Angélica Bermúdez 1, Amit S. Patel 2 and ...
... endoscopic endonasal intraconal orbital tumor surgery. by Kibwei A. McKinney et al. ... Endoscopic management of orbital tumors.. *William C Yao, Benjamin Saul Bleier. *. Current opinion in otolaryngology & head and ... Compartmental Endoscopic Surgical Anatomy of the Inferior Intraconal Orbital Space.. *Alice Z Maxfield, Christopher D. Brook, ... Endonasal Endoscopic Approach for Primary and Secondary Orbital Lesions. *Joel Caballero García, Iosmill Morales Pérez, ...
... orbital gland explanation free. What is orbital gland? Meaning of orbital gland medical term. What does orbital gland mean? ... Looking for online definition of orbital gland in the Medical Dictionary? ... orbital neoplasm. in dogs sarcoma and carcinoma common, multilobular osteoma occurs; in other species tumors uncommon except ... orbital. pertaining to the eye socket.. orbital abscess. may be associated with orbital cellulitis. Can be caused by foreign ...
orbital cavity synonyms, orbital cavity pronunciation, orbital cavity translation, English dictionary definition of orbital ... Noun 1. orbital cavity - the bony cavity in the skull containing the eyeball cranial orbit, eye socket, orbit bodily cavity, ... A 12-Year Retrospective Survey of Management of Patients with Malignant Neoplasms in the Orbital Cavity in a Brazilian Cancer ... orbital cavity. Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.. Related to orbital cavity: middle ear ...
SiO2 was characterized by Fourier transform infrared spectroscopy and molecular orbital calculations. The surface of the silica ... Stewart, J.J.P. MOPAC: A semiempirical molecular orbital program. J. Comput. Aided Mol. Des. 1990, 4, 1-103. [Google Scholar] [ ... and double-stranded RNA measurements by flow cytometry in solid neoplasms. Cytometry 1991, 12, 330-335. [Google Scholar] [ ... Fukui, K.; Yonezawa, T.; Shingu, H. A molecular orbital theory of reactivity in aromatic hydrocarbons. J. Chem. Phys. 1952, 20 ...
Orbital Neoplasms / diagnosis, genetics, pathology, surgery*. Polymerase Chain Reaction. Retrospective Studies. Sarcoma, ... METHODS: The patient was treated with orbital exenteration and followed up for 18 months at regular intervals. RESULTS: The ...
What condition is associated with non-septate, large branching hyphae that stain with H&E on biopsy of orbital infection? ... What condition is associated with orbital mass associated with "tram-tracking" on plain film x-ray? ... What condition is associated with orbital mass with biphasic pattern of nuclear palisading and myxoid areas? ... What is the most common type of organism causing preseptal and orbital cellulitis in children? ...
Neoplasms of the eye and ocular adnexa with emphasis on orbital tumors ...
  • These masses can be tumors , benign or malignant, or pseudotumor, mainly represented by specific or non-specific orbital inflammation. (clinicaltrials.gov)
  • Prospective study on patients with orbital tumors of unknown origin. (clinicaltrials.gov)
  • The level of diffusion and perfusion (multiparametric characterization) of the orbital tumors will be measured and the outcome measure is the ability of diffusion and perfusion imaging to predict malignancy. (clinicaltrials.gov)
  • The authors describe two cases of patients with uncommon primary orbital tumors whose diagnosis was obtained by means of computed tomography-guided core needle biopsy, with emphasis on the technical aspects of the procedure. (scielo.br)
  • However, few reports are found in the literature about the utilization of such procedures as a minimally invasive diagnostic method in cases of orbital tumors. (scielo.br)
  • Endoscopic management of orbital tumors. (semanticscholar.org)
  • Doctors use the term "neoplasm" (tranlates literally as new growth) to describe tumors that are abnormal growths of cells. (healthtap.com)
  • 1. Orbital Tumors (Robert L. Peiffer, Jr., Kenneth B. Simons). (wiley.com)
  • For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned. (icd10data.com)
  • Carol L Shields MD Written by world-renowned authorities in ocular oncology at the Wills Eye Institute, this text/atlas is a complete pictorial and textual guide to the clinical features, pathology, diagnosis, and management of eyelid, conjunctival, and orbital tumors and pseudotumors. (egeneralmedical.com)
  • This thoroughly updated edition combines the content of Atlas of Eyelid and Conjunctival Tumors and Atlas of Orbital Tumors and contains over 50 percent new material.Each entity is presented in an easy-to-follow format: a concise description with references on the left-hand page and six illustrations on the right-hand page. (egeneralmedical.com)
  • This unsurpassed ocular oncology resource is a comprehensive guide to the clinical features, diagnosis, management, and pathology of eyelid, conjunctival, and orbital tumors and pseudotumors, depicting clinical variations, treatment and histopathologic characteristics of the wide spectrum of neoplasms and related lesions. (ovid.com)
  • Although SN neoplasms are relatively uncommon compared to other head and neck tumors, radiologists are likely to encounter these lesions because of the frequency of sinus imaging. (appliedradiology.com)
  • 1 The histologic categories of neoplasms include epithelial lesions, soft tissue tumors, tumors of bone and cartilage, hematolymphoid tumors, neuroectodermal tumors, germ cells tumors and secondary tumors. (appliedradiology.com)
  • The complete WHO classification of SN tumors can be found online at http://www.iarc.fr/en/publications/pdfs-online/pat-gen/bb9/index.php. (appliedradiology.com)
  • Glomus tumors are rare, benign neoplasms of the glomus body, a specialized thermoregulatory arteriovenous structure. (biomedcentral.com)
  • Eye neoplasms can affect all parts of the eye, and can be a benign tumor or a malignant tumor (cancer). (wikipedia.org)
  • The present report describes two cases of primary orbital tumor diagnosed by CT-guided percutaneous biopsy. (scielo.br)
  • Seeing the light: endoscopic endonasal intraconal orbital tumor surgery. (semanticscholar.org)
  • Char DH, Sobel D, Kelly WM, Kjos BO, Norman D (1985) Magnetic resonance scanning in orbital tumor diagnosis. (springer.com)
  • A bone tumor is a type of neoplasm. (healthtap.com)
  • 1 CM pituitary neoplasm, stable but has been called tumor, hypophysitis, nothing, leading to $1ks of mris with no certainty as to diagnosis of pituitary or partial adrenal insuff, biopsy worth risks? (healthtap.com)
  • neoplasms of uncertain behavior" means a rare tumor that the pathologist cannot say with certainty either is or is not cancer . (healthtap.com)
  • Preoperative imaging to predict orbital invasion by tumor. (springer.com)
  • Hi, I would like to get more information about Orbital Inflammatory Pseudo Tumor Disease since my sister has been diagnosed with it recently. (steadyhealth.com)
  • Orbital Inflammatory Pseudo Tumor Disease is a rare disease manifested as inflammation occurring within the orbit that looks like a neoplasm. (steadyhealth.com)
  • Hi there, Orbital inflammatory pseudo tumor disease is an inflammatory reaction in the orbital tissue which surrounds the eye. (steadyhealth.com)
  • A distinctive orbital tumor in adults. (thedoctorsdoctor.com)
  • A left nasolacrimal duct tumor was excised en bloc by lateral rhinotomy. (thedoctorsdoctor.com)
  • Although CT is not the best modality for characterizing neoplasms and mapping extent of disease, CT can help define the site of origin, depict bony remodeling vs. bony destruction, and detect internal calcifications and tumor matrix. (appliedradiology.com)
  • This report describes a recurrent orbital glomus tumor in an Asian patient. (biomedcentral.com)
  • This is the first report of an Asian patient with an orbital glomus tumor that demonstrated rapid re-growth after incision without pain or visual problems. (biomedcentral.com)
  • We describe the unique features of a large orbital glomus tumor that developed and re-grew rapidly in an Asian patient. (biomedcentral.com)
  • We present a practical approach to diagnosing sino-orbital pathologies with an emphasis on distinguishing imaging features of lesions and recognizing impact on important adjacent anatomic structures. (appliedradiology.com)
  • Computed tomography-guided percutaneous biopsy is a safe and effective alternative method for evaluating selected intra-orbital lesions where the preoperative diagnosis is important for the therapeutic planning. (scielo.br)
  • A differential diagnosis includes lymphoproliferative lesions, thyroid ophthalmopathy, IgG4-related ophthalmic disease, sarcoidosis, granulomatosis with polyangiitis, orbital cellulitis and carotid-cavernous fistula. (wikipedia.org)
  • Examination of the oral cavity should always be performed in dogs with space-occupying orbital lesions. (vin.com)
  • It features 2,532 photographs and surgical drawings-2,137 in full color-that depict the clinical variations, histopathologic characteristics, and treatment of all neoplasms and related lesions. (egeneralmedical.com)
  • While differentiating one neoplasm from another can be difficult, imaging can often help differentiate benign from malignant lesions. (appliedradiology.com)
  • The neoplasm is not common in the orbit, and reports in the ophthalmic literature usually describe single-case examples of the neoplasm with short-term periods of observation. (jamanetwork.com)
  • In the orbit, those neoplasms frequently are circumscribed in their growth. (jamanetwork.com)
  • It is more common for SN pathology to affect the orbit than the reverse, and primary sinus pathology may initially present with predominantly orbital, rather than sinus, symptomatology. (appliedradiology.com)
  • Infectious and inflammatory conditions of the sino-orbital region usually arise in the SN cavities and spread to the orbit. (appliedradiology.com)
  • These entities affect the orbit either by direct extension or by distortion of the orbital walls. (appliedradiology.com)
  • Orbital abscess typically appears as a rim-enhancing, fluid attenuation (CT) or signal (MRI) collection along the medial wall or roof of the orbit (Figure 2). (appliedradiology.com)
  • Orbital magnetic resonance imaging (MRI) was requested and demonstrated the presence of a retrobulbar solid cystic, extraconal lesion in the posterior and superolateral region of the right orbit, leading to inferomedial displacement of the superior rectus muscle and of the optic nerve (Figures 1B and 1C). (scielo.br)
  • Idiopathic orbital inflammatory (IOI) disease, or orbital pseudotumor, refers to a marginated mass-like enhancing soft tissue involving any area of the orbit. (wikipedia.org)
  • Transorbital (orbital apex/superior orbital fissure/orbit). (schweitzer-online.de)
  • Ocular adnexal lymphomas (OAL) represent lymphatic neoplasms which develop as primary or secondary tumour manifestations in the conjunctiva, lid, orbit, lacrimal gland, or lacrimal sac. (bmj.com)
  • There was one case of presumed orbital infection (culture-negative) that resolved with intravenous antibiotics, and the implant was retained within the orbit. (nih.gov)
  • The SNEC Oculoplastic, Orbital & Lacrimal Surgery Fellowship programme provides advanced training in the medical and surgical aspects of diseases of the ocular adnexae, orbit and lacrimal system. (snec.com.sg)
  • Ophthalmic lymphoma (lymphoma localized in the ocular region, i.e., eyelid, conjunctiva, lacrimal sac, lacrimal gland, orbit, or intraocularly) constitutes approximately 10% of all extranodal NHL, 4 and lymphoma is the most common orbital malignancy. (arvojournals.org)
  • A provisional diagnosis of orbital dermoid was made and the patient was taken up for an excision biopsy. (scribd.com)
  • Its diagnosis is of exclusion once neoplasm, primary infection and systemic disorders have been ruled-out. (wikipedia.org)
  • Dua HS, Smith FW, Singh AK, Forrester JV (1987) Diagnosis of orbital myositis by nuclear magnetic resonance imaging. (springer.com)
  • Orbital ultrasound is useful in diagnosis, preferably combined with a fine-needle aspirate. (vin.com)
  • Local failure was observed in three patients with intermediate grade lymphoma, who had destruction of the orbital wall at the time of initial diagnosis. (elsevier.com)
  • Neurosurgical service performed craniotomy and decompression of the superior orbital fissure and optic canal (yellow arrows) at request of ophthalmology service. (medscape.com)
  • How can you treat superior orbital fissure syndrome when the etiology is a neoplasm? (healthtap.com)
  • The second MRI scan disclosed a 5x9x10 mm lesion in the left superior orbital fissure/cavernous sinus. (dovepress.com)
  • The most common orbital malignancy is orbital lymphoma. (wikipedia.org)
  • Most patients with orbital lymphoma can be offered chemotherapy or radiation therapy. (wikipedia.org)
  • A variant of t(14;18)-negative nodal diffuse follicular lymphoma (FL) with 1p36 deletion has been proposed in the 2017 World Health Organization (WHO) classification of lymphoid neoplasms. (medscape.com)
  • Introduction: Orbital lymphoma is a rare presentation of extranodal non-Hodgkin's lymphoma, accounting for less than 1% of the total. (cogprints.org)
  • This is a report of a case of orbital lymphoma Materials and Methods: Clinical records and pathologic material of a patient woman of 62 age treated with local radiotherapy for localized orbital lymphoma. (cogprints.org)
  • Conclusion: In this case, localized orbital MALT lymphoma was well controlled with radiotherapy. (cogprints.org)
  • A revised European-American classification of lymphoid neoplasm: a proposal from the International Lymphoma Study Group. (cogprints.org)
  • Local control and complications after radiation therapy for primary orbital lymphoma: A case for low dose treatment. (cogprints.org)
  • 10. Chao C K, Lin H S, Devineni V R, Smith M. Radiation therapy for primary orbital lymphoma. (cogprints.org)
  • Isolate myositic orbital pseudotumor always rings in the confusion of, "Is there an underlying neoplasm like lymphoma? (radiopaedia.org)
  • To define the role of radiation therapy of primary orbital lymphoma, a retrospective analysis was undertaken for 18 patients with primary orbital lymphoma who were treated with curative radiotherapy between 1984 and 1995. (elsevier.com)
  • Low-dose (30 Gy) radiation treatment alone seems to be sufficient to control low grade primary orbital lymphoma. (elsevier.com)
  • Carefully planned radiotherapy with appropriate lens shielding is an effective and safe treatment modality in the management of primary orbital lymphoma. (elsevier.com)
  • For intermediate grade primary orbital lymphoma with extensive bony involvement, a planned combined modality with chemotherapy and radiotherapy should be considered. (elsevier.com)
  • Vascular pathologies (such as capillary and cavernous hemangioma), inflammatory diseases (such as endocrine orbitopathy), and neoplasms (such as lymphoma, uveal melanoma, retinoblastoma, and ocular/orbital metastasis) are described. (medworm.com)
  • As inflammatory myositis can be a paraneoplastic feature of neoplasms such as lung cancer, colon cancer and non-Hodgkin lymphoma, it was suggested that the patient might have an occult neoplasm. (pubmedcentralcanada.ca)
  • The disease can easily be missed by unsuspecting hematologists, as patients may present with clinical problems that mimic disorders such as multicentric Castleman disease, lymphoma, plasma cell neoplasms and hypereosinophilic syndromes. (haematologica.org)
  • Involvement of blood-forming and lymphoid organs, manifesting as lymphadenopathy, eosinophilia, and polyclonal hypergammaglobulinemia, is common and IgG4-RD often mimics other hematologic conditions such as multicentric Castleman disease, lymphoma, plasma cell neoplasms, and hypereosinophilic syndromes (HES). (haematologica.org)
  • In the Danish population ophthalmic lymphoma consists primarily of orbital MALT lymphoma. (arvojournals.org)
  • Non-Hodgkin lymphoma (NHL) is a malignant neoplasm derived from a clonal proliferation of B or T lymphocytes. (arvojournals.org)
  • It is a benign, nongranulomatous orbital inflammatory process characterized by extraocular orbital and adnexal inflammation with no known local or systemic cause. (wikipedia.org)
  • Idiopathic orbital inflammation has a varied clinical presentation depending on the involved tissue. (wikipedia.org)
  • It can range from a diffuse inflammatory process to a more localized inflammation of muscle, lacrimal gland or orbital fat. (wikipedia.org)
  • Pediatric IOI accounts for about 17% of cases idiopathic orbital inflammation. (wikipedia.org)
  • proposes that organisms resembling Mollicutes cause orbital inflammation by destroying the cytoplasmic organelles of parasitized cells. (wikipedia.org)
  • The histopathology of idiopathic orbital inflammation is described as nondiagnostic and diverse. (wikipedia.org)
  • They include inflammation of the extraocular muscles (myositis) with tendinous involvement, orbital fat stranding, lacrimal gland inflammation and enlargement (dacryoadenitis), involvement of the optic sheath complex, uvea, and sclera, a focal intraorbital mass or even diffuse orbital involvement. (wikipedia.org)
  • There are many kinds of orbital inflammation, and they need to be checked before this diagnose is established. (steadyhealth.com)
  • Idiopathic orbital inflammatory syndrome, also known as orbital pseudotumor, was first described by Gleason in 1903 and by Busse and Hochhmein. (wikipedia.org)
  • The best imaging modality for idiopathic orbital inflammatory disease is contrast-enhanced thin section magnetic resonance with fat suppression. (wikipedia.org)
  • Overall, radiographic features for idiopathic orbital inflammatory syndrome vary widely. (wikipedia.org)
  • Neoplasms are not initially painful, in contrast to orbital inflammatory disease. (vin.com)
  • We believe that reporting of such cases may be helpful to remind physicians to consider an occult neoplasm in a patient presenting with an inflammatory myopathy. (pubmedcentralcanada.ca)
  • Many patients with SN neoplasms are initially imaged with computed tomography (CT), as the presenting symptoms often mimic inflammatory disease. (appliedradiology.com)
  • The one-year Rhinology and Skull Base fellowship will provide advanced subspecialty training in medical management of complex paranasal sinus inflammatory disorders, revision sinus surgery, orbital surgery, cerebrospinal fluid leaks and encephalocele repair, and minimally invasive approaches to the skull base for resection of benign and malignant sinonasal and intracranial neoplasms. (uclahealth.org)
  • Exenteration - Removal of the eye, all orbital contents, which can involve the eyelids as well. (wikipedia.org)
  • Exenteration is surgical removal of the orbital contents, including the globe, ocular adnexa, and eyelids. (elsevier.com)
  • It is the most common painful orbital mass in the adult population, and is associated with proptosis, cranial nerve palsy (Tolosa-Hunt syndrome), uveitis, and retinal detachment. (wikipedia.org)
  • These diseases, especially dermatomyositis, have a well-known association with a wide variety of neoplasms including lung, breast, ovary and colon cancers. (pubmedcentralcanada.ca)
  • In extensive orbital myiasis, exenteration is needed to prevent intracranial extension of tissue destruction. (hkmj.org)
  • METHODS: The patient was treated with orbital exenteration and followed up for 18 months at regular intervals. (biomedsearch.com)
  • The management of one patient was complicated by a history of orbital decompression for suspected thyroid eye disease. (bmj.com)
  • Current surgical approaches to orbital decompression vary between American Society of Ophthalmic Plastic and Reconstructive Surgery surgeons, and no single technique is universally preferred. (lww.com)
  • Correction of Lower Eyelid Retraction Using Acellular Human Dermis During Orbital Decompression. (amedeo.com)
  • Customized Minimally Invasive Orbital Decompression Surgery Improves Lower Eyelid Retraction and Contour in Thyroid Eye Disease. (amedeo.com)
  • A Retrospective Review of Orbital Decompression for Thyroid Orbitopathy with Endoscopic Preservation of the Inferomedial Orbital Bone Strut. (amedeo.com)
  • Postoperative Changes in Strabismus, Ductions, Exophthalmometry, and Eyelid Retraction After Orbital Decompression for Thyroid Orbitopathy. (amedeo.com)
  • Thyroid-Related Orbital Decompression Surgery: A Multivariate Analysis of Risk Factors and Outcomes. (amedeo.com)
  • Central Retinal Vein Occlusion Resolving After Orbital Decompression in Thyroid Eye Disease. (amedeo.com)
  • Orbital masses develop at the expense of the orbital structures lacrimal glands, oculomotor muscles, optic nerve, meningeal spaces, peripheral nerves, bone wall, orbital fat, lymphoid structures or vascular structures. (clinicaltrials.gov)
  • Its former name, orbital pseudotumor, is derived due to resemblance to a neoplasm. (wikipedia.org)
  • Several studies have described cases where onset of orbital pseudotumor was seen simultaneously or several weeks after upper respiratory infections. (wikipedia.org)
  • Orbital pseudotumor has also been observed in association with Crohn's disease, systemic lupus erythematosus, rheumatoid arthritis, diabetes mellitus, myasthenia gravis, and ankylosing spondylitis all of which strengthen the basis of IOI being an immune-mediated disease. (wikipedia.org)
  • Trauma has also been seen to precede some cases of orbital pseudotumor. (wikipedia.org)
  • Eyelid neoplasms occur most frequently in older dogs, with a mean age of 9-10 years. (vin.com)
  • The SN cavities are one of the most histologically diverse areas of the body, with a large variety of neoplasms occurring in the region. (appliedradiology.com)
  • The incidence of orbital involvement by SN disease is much more common than sinus involvement by orbital disease. (appliedradiology.com)
  • We present the case of a symptomatic orbital mucocele arising from contralateral sinus disease that crossed the midline upon diversion by the effect of prior trauma. (mdpi.com)
  • We present an unusual case in which disruption by prior trauma led to diversion of mucus from occult sinus disease into adjacent sinus cavities and orbital mucocele formation. (mdpi.com)
  • More recently, nuclear TTF‐1 protein expression was reported in primary and metastatic colonic adenocarcinoma, 11 , 12 primary ovarian epithelial neoplasms, 13 thyroid‐like nasopharyngeal papillary adenocarcinoma, 7 gastric atrophic gastritis and ciliated metaplasia, 14 and brain ependymomas. (pubmedcentralcanada.ca)
  • Papillomas are the most frequently encountered benign epithelial neoplasms, and the inverted papilloma (IPap) is the most common subtype. (appliedradiology.com)
  • This study aimed to determine the fatty acid composition and nutritional quality of total lipids in the adipose tissue from the orbital cavity of Nile tilapia (Oreochromis niloticus) from continental aquaculture in the State of Paraiba, Brazil. (thefreedictionary.com)
  • In the setting of extensive sclerosis there may be restriction, compression, and destruction of orbital tissue. (wikipedia.org)
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified ( C25.9 ). (icd10data.com)
  • Abnormal growths of tissue that follow a previous neoplasm but are not metastases of the latter. (umassmed.edu)
  • The exposed orbital walls may be left to heal spontaneously, by granulation tissue or covered with a split-thickness skin graft. (elsevier.com)
  • For patients with lid, brow, or conjunctival tumours the interval of greatest delay was between referral and initial assessment, and for those with orbital, lacrimal, or intraocular tumours it was between initial assessment and consent. (biomedsearch.com)
  • Evisceration is a surgical technique by which all intraocular contents are removed while preserving the remaining scleral shell, extraocular muscle attachments, and surrounding orbital adnexa. (aao.org)
  • We report our results on our initial 250 consecutive cases of hydroxyapatite implantation for eyes enucleated primarily for intraocular neoplasms, with specific emphasis on the complication an their management. (nih.gov)
  • We report a case of orbital myiasis from the species Chrysomya bezziana complicating squamous cell carcinoma of the eyelid. (hkmj.org)
  • Another patient died of local orbital recurrence with secondary invasion of the intracranial vault, which was possibly related to heavy radiotherapy. (jamanetwork.com)
  • Risk of subsequent malignant neoplasms in long-term hereditary retinoblastoma survivors after chemotherapy and radiotherapy. (umassmed.edu)
  • However, biopsy or surgical resection of the orbital masses is sometimes difficult and dangerous outside expert centers. (clinicaltrials.gov)
  • Boari N, Gagliardi F, Castellazzi P, Mortini P. Surgical treatment of orbital cavernomas: clinical and functional outcome in a series of 20 patients. (medscape.com)
  • Compartmental Endoscopic Surgical Anatomy of the Inferior Intraconal Orbital Space. (semanticscholar.org)
  • Surgical limitations in convexity meningiomas en-plaque: is radical resection necessary? (thieme-connect.com)
  • 5 Mirone G, Chibbaro S, Schiabello L, Tola S, George B. En plaque sphenoid wing meningiomas: recurrence factors and surgical strategy in a series of 71 patients . (thieme-connect.com)
  • Abstract: A rare case of orbital schwannoma arising from one of the inferior orbital peripheral nerve is presented. (scribd.com)
  • During a mean of 23 months follow-up (range, 6 to 42 months), there have been no recognizable cases of orbital hemorrhage related to the implant and no cases of implant extrusion or implant migration. (nih.gov)
  • 3 Of note, orbital and intracranial extension may coexist and early recognition is critical. (appliedradiology.com)
  • MRI is superior to CT in evaluating orbital and intracranial extension. (appliedradiology.com)
  • These findings were suggestive of left orbital metastasis with intracranial extension (Figure 2). (harvard.edu)
  • Liu X, Xu D, Zhang Y, Liu D, Song G. Gamma Knife surgery in patients harboring orbital cavernous hemangiomas that were diagnosed on the basis of imaging findings. (medscape.com)
  • 1 In adults, orbital complications are more common in immunocompromised and diabetic patients. (appliedradiology.com)
  • The longest mean total waiting time averaged 94.16 (SE 18.69) days for patients with orbital or lacrimal tumours. (biomedsearch.com)
  • A 12-Year Retrospective Survey of Management of Patients with Malignant Neoplasms in the Orbital Cavity in a Brazilian Cancer Hospital. (thefreedictionary.com)
  • While most patients with orbital disease and a large proportion of patients with systemic extra-central nervous system (CNS) metastases can be cured, the prognosis for patients with intracranial disease is dismal. (uwhealth.org)
  • Some of patients report to orbital pain in certain compartments associated with double vision (diplopia). (steadyhealth.com)
  • Orbital sarcomas in retinoblastoma patients: recommendations for screening and treatment guidelines. (umassmed.edu)
  • Orbital disease. (medscape.com)
  • Common presentations include major salivary and lacrimal gland enlargement, orbital disease, autoimmune pancreatitis, retroperitoneal fibrosis and tubulointerstitial nephritis. (haematologica.org)
  • 3 Akutsu H, Sugita K, Sonobe M, Matsumura A. Parasagittal meningioma en plaque with extracranial extension presenting diffuse massive hyperostosis of the skull . (thieme-connect.com)
  • Diffuse hyprenhancement of the muscle was observed with no other extra ocular muscle nor any other orbital structure involvement. (radiopaedia.org)
  • This constellation of findings is consistent with diffuse infiltrating retinal neoplasm extending into the anterior ocular segment. (ajnr.org)
  • Different orbital approaches for exploration, biopsy and tumour excision. (snec.com.sg)
  • Traces of tunnels and nests were found on the skull in the intracranial region, temporal region, orbital cavity , ear canal, palate (Figure 1), nasal fossae, pterygopalatine fossa, and also on vertebrae, tibia and foot bones. (thefreedictionary.com)
  • The surgery often includes placement of an implant into the evisceration cavity to maintain appropriate orbital volume. (aao.org)
  • Magnetic Resonance Imaging of the Orbital Cavity: Indications and Diagnostic Possibilities. (medworm.com)
  • Subperiosteal phlegmon/abscess is the most common imaging finding in sinogenic orbital infection. (appliedradiology.com)
  • Noyes and Mules respectively added to this technique in the late 19th century when describing this approach to treat ocular infection and first reporting the placement of an orbital implant. (aao.org)
  • The hydroxyapatite integrated orbital implant is a well-tolerated motility implant without the high rate of extrusion and infection seen with other motility implants. (nih.gov)
  • The motility of wrapped and unwrapped hydroxyapatite orbital implants after enucleation is the same. (lww.com)
  • What causes congenital microphthalmos with orbital cyst? (brainscape.com)
  • Orbital surgery service then opened the periorbita over a bulge (double black arrows) between optic nerve and cranial nerves (single black arrow) and bluntly dissected out mass. (medscape.com)
  • Large deep orbital dermoid cysts can cause pressure effects on the muscles and optic nerve, leading to diplopia and loss of vision. (wikipedia.org)
  • [3] Another popular technique was also described by Long in 2000 in which a posterior sclerotomy was created, the optic nerve transected, and the orbital implant placed behind both the posterior and anterior flaps of sclera. (aao.org)
  • Orbital dermoid cysts are benign choristomas which are typically found at the junction of sutures, most commonly at the fronto-zygomatic suture. (wikipedia.org)