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 ...

TY - JOUR. T1 - Stereotactic Radiotherapy for Unilateral Orbital Lymphoma and Orbital Pseudo-Tumors. T2 - A Planning Study. AU - Chino, Kazumi. AU - Tanyi, James A.. AU - Stea, Baldassarre. N1 - Copyright: Copyright 2009 Elsevier B.V., All rights reserved.. PY - 2009/3. Y1 - 2009/3. N2 - Orbital lymphoma and Graves ophthalmopathy (GO) are successfully treated with radiation therapy. The lenses are blocked to prevent cataract formation. However, blocking of the lens by traditional methods can be difficult for tumors located anteriorly and extending into the retrobulbar space. We present a series of 3 patients with orbital lymphoma and 1 with GO treated with stereotactic intensity modulated radiation therapy (IMRT) to spare normal structures, including the lens. Three patients with orbital lymphomas and 1 with unilateral GO were treated with IMRT using a linac with stereotactic capabilities. Avoidance structures included the ipsilateral lens and globe, the contralateral lens and globe, the ...

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.

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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 ...

Bradley KT, Arber DA, Brown MS, Chang CC, Coupland SE, de Baca ME, Ellis DW, Foucar K, Hsi ED, Jaffe ES, Lill MC, McClure SP, Medeiros LJ, Perkins SL, Hussong JW. Protocol for the examination of specimens from patients with hematopoietic neoplasms of the ocular adnexa. Arch Pathol Lab Med. 2010 Mar; 134(3):336-40 ...

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!. ...

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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 ...

Direct injection into a solar polar orbit from the Earth is not feasible, because the energy required cannot be provided even by the most powerful launch vehicles available today. The energy needed is so much, because the Earth itself orbits the Sun at a speed of 30 kms-1 in a plane perpendicular to the desired solar polar orbit and the energy imparted to a space probe must cancel out this motion in addition to providing the correct polar trajectory. Direct injection into a solar polar orbit from the Earth is not feasible, because the energy required cannot be provided even by the most powerful launch vehicles available today. The energy needed...

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.

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Orbit itself does not have releases, per se, since the 3rd party jars that are bundled have already been released. But, we will still use the Eclipse Simultaneous Release rhythm to set deadlines for ourselves and promote and retain bundles. An Orbit milestone will be considered the same as the base Eclipse platform. This is a statement of time, as opposed to content, since for anyone else in the Simultaneous Release to use an Orbit Bundle, it would have to be ready (and final) at least a week or two before their milestone deadline. Our continuous builds produce bundles (builds) in the committers area. Their purpose is for the committers to have something to see or download and confirm all is as they expect it to be. These builds are often short lived and can be deleted without notice. Once per week, currently by Monday noon (Eastern time), the latest continuous build will be copied over to the downloads area. These are similar or analogous to weekly Integration Builds, and will be retained in ...

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 ...

To report the clinical experience of eye sparing surgery (ESS) and adjuvant carbon-ion or proton radiotherapy (CIRT or PRT) for orbital malignancies. An analysis of the retrospective data registry from the Shanghai Proton and Heavy Ion Center for patients with orbital tumors was conducted. The 2-year local progression-free, regional recurrence-free, distant metastasis-free, progression-free, and overall survival (LPFS, RRFS, DMFS, PFS, OS) rates as well as associated prognostic indicators were analyzed. Radiotherapy-induced acute and late toxicities were summarized. Between 7/2014 to 5/2018, 22 patients with orbital malignancies of various pathologies received ESS followed by CIRT (18), PRT (1), or PRT + CIRT boost (3). With a median follow-up of 20.25 (range 3.8-38.8) months, the 2-year OS, PFS, LPFS, RRFS, and DMFS rates were 100, 57.9, 92.9, 93.3, and 72.8%, respectively. No acute severe (i.e., ≥grade 3) toxicity was observed. Two patients experienced severe visual impairment as late toxicities.

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 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. ...

Interactions greater than 20 kJ/mol for bonding and lone pair orbitals are listed below. The interaction of bonding donor orbital, 1, for O1-H3 with the second antibonding acceptor orbital, 118, for P2-O5 is 2.59 kJ/mol. The interaction of bonding donor orbital, 2, for O1-H4 with the second antibonding acceptor orbital, 121, for P2-O7 is 2.42 kJ/mol. The interaction of lone pair donor orbital, 16, for O1 with the second antibonding acceptor orbital, 118, for P2-O5 is 2.59 kJ/mol. The interaction of lone pair donor orbital, 16, for O1 with the second antibonding acceptor orbital, 121, for P2-O7 is 2.55 kJ/mol. The interaction of the second lone pair donor orbital, 17, for O1 with the antibonding acceptor orbital, 117, for P2-O5 is 13.8 kJ/mol. The interaction of the second lone pair donor orbital, 17, for O1 with the second antibonding acceptor orbital, 118, for P2-O5 is 43.8 kJ/mol. The interaction of the second lone pair donor orbital, 17, for O1 with the antibonding acceptor orbital, 119, for ...

Figure \(\PageIndex{1}\) shows a simplified and generic molecular orbital diagram for a second-row homonuclear diatomic molecule. Each line in this diagram represents one pair of shared electrons. Maybe you just need a little extra help using the Brand. In this. fig Molecular Orbital Analysis of Ethene Dimerisation the reaction is said to be a symmetry forbidden - interestingly, this reaction is rare and very slow!.Analogously, the second interaction between the HOMO of ethene and LUMO of 1,3-butadiene (not shown) leads to the formation of the second bonding molecular orbital. Molecular Representations; Molecular Orbitals: Methane; Molecular Orbitals: Ethene; Molecular Orbitals: Ethyne; Comparison of Resonance & MO Theory; How to Write Resonance Structures; Page made with JSmol: an open-source HTML5 viewer … The Ethyne molecule contains a total of 3 bond(s) There are 1 non-H bond(s), 1 multiple bond(s) and 1 triple bond(s). If you have read the ethene page, you will expect that ethyne is ...

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

Molecular orbital (MO) theory explains the construction of molecular orbital diagram on the basis of following main points . 1.Formation of MOs: Atomic orbitals(AOs) linearly combine with each other to form equal number of molecular orbitals (MOs). 2.Energy of MOs: Half of the molecular orbitals (MOs) having energy lower than the atomic orbitals are called…

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…

10.7 The Hydrogen Orbitals. In the Wave Mechanical model of the atom an orbital represents the space around the nucleus occupied by an electron. An orbital is the probability distribution for an electron where it can be found 90% of the time (see fig 10.20, 10.24, 10.25). Hydrogen...

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 ...

A molecular orbital diagram, or MO diagram, is a qualitative descriptive tool explaining chemical bonding in molecules in terms of molecular orbital theory in general and the linear combination of ...

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

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

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] ...

The optic nerve is a vital bundle of axons which carries all visual information from the retina posterior to the brain for higher order processing. The optic nerve and eye orbit are affected by many devastating diseases ...

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 ...