Definition of pterygoid process in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is pterygoid process? Meaning of pterygoid process as a finance term. What does pterygoid process mean in finance?

The pterygomandibular space is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a potential space in the head and is paired on each side. It is located between the medial pterygoid muscle and the medial surface of the ramus of the mandible. The pterygomandibular space is one of the four compartments of the masticator space. The boundaries of each pterygomandibular space are: the posterior border of the buccal space anteriorly the parotid gland posteriorly the lateral pterygoid muscle superiorly the inferior border of the mandible (lingual surface) inferiorly the medial pterygoid muscle medially (the space is superficial to medial pterygoid) the ascending ramus of the mandible laterally (the space is deep to the ramus of the mandible) the communications of each pterygomandibular space are: to the buccal space anteriorly to the lateral pharyngeal space and peritonsillar space medially (around the medial pterygoid muscle). to the submasseteric ...

OBJECTIVE: Suprasellar craniopharyngiomas have been classically removed using a variety of transcranial approaches. Historically, the transsphenoidal route was reserved for intrasellar-infradiaphragmatic, and preferably cystic, lesions. With the advent of the endoscope in transsphenoidal surgery, its obvious advantages combined with neurosurgeons increasing interest in extended transsphenoidal approaches made suprasellar and even intraventricular craniopharyngiomas accessible for removal via such a low route.. PATIENTS AND METHODS: Between January of 2004 and April of 2006, six men and four women (mean age, 57.2 yr; range, 26-70 yr) underwent surgery for craniopharyngioma, including two intrasuprasellar, one suprasellar, six suprasellar-intraventricular, and one that was purely intraventricular. Three patients had undergone a previous transcranial surgery via the pterional approach, whereas one patient had undergone a transsphenoidal microsurgical approach. The surgical method consisted of an ...

A sphenoid wing meningioma is a benign brain tumor near the sphenoid bone. A meningioma is a benign brain tumor. It originates from the arachnoid (not the dura), the tissue covering the brain and spinal cord lying deep to the dura. Meningiomas are much more common in females, and are more common after 50 years of age. Of all cranial meningiomas, about 20% of them are in the sphenoid wing. In some cases, deletions involving chromosome 22 are involved. Sphenoid wing meningiomas are diagnosed by the combination of suggestive symptoms from the history and physical and neuroimaging by magnetic resonance imaging (MRI) or computer averaged tomography (CT). Tumors growing in the inner wing (clinoidal) most often cause direct damage to the optic nerve leading especially to a decrease in visual acuity, progressive loss of color vision, defects in the field of vision (especially cecocentral), and an afferent pupillary defect. If the tumor continues to grow and push on the optic nerve, all vision will be ...

TY - JOUR. T1 - Combined simultaneous endoscopic transsphenoidal and endoscopic transventricular resection of a giant pituitary macroadenoma. AU - Greenfield, J. P.. AU - Leng, L. Z.. AU - Chaudhry, Umar. AU - Brown, S.. AU - Anand, V. K.. AU - Souweidane, M. M.. AU - Schwartz, T. H.. PY - 2008/10/1. Y1 - 2008/10/1. N2 - Intrasellar and sellar-suprasellar adenomas are generally removed through a transsphenoidal approach. Giant adenomas with significant suprasellar extension often require a craniotomy or combined above and below approach. The use of endoscopes has increased the visualization capacity of the transsphenoidal route and made these surgeries less invasive. In this report, we describe a novel combination of the endoscopic transsphenoidal approach with the endoscopic transventricular approach to remove a giant pituitary macroadenoma extending into the third and lateral ventricles. The tumor was initially removed via an endoscopic transnasal transsphenoidal, transtuberculum, ...

Each pterygoid process projects inferiorly from the junction of the body and greater wing of the sphenoid bone and bifurcates into a medial pterygoid plate and a lateral pterygoid plate. The spaces separated the medial and lateral plate are pterygoid fissure inferiorly and pterygoid fossa posterior-superiorly. The lateral aspect of the lateral pterygoid plate forms the medial wall of the infratemporal fossa. The root of the pterygoid process forms the posterior wall of the pterygopalatine fossa. The anterior opening of the pterygoid canal also sits on the anterior aspect of the root of the pterygoid process. ...

Home » Pterygoid. pterygoid (Science: anatomy) Like a birds wing in form; as, a pterygoid bone. Of, pertaining to, or in the region of, the pterygoid bones, pterygoid processes, or the whole sphenoid bone. A pterygoid bone. (Science: anatomy) Pterygoid bone, a process projecting downward from either side of the sphenoid bone, in man divided into two plates, an inner and an outer. The posterior nares pass through the space, called the pterygoid fossa, between the processes. Origin: Gr, a wing. ...

The posterior surface of the body, quadrilateral in form (fig. 349), is joined, during infancy and adolescence to the front of the basilar part of the occipital bone by a plate of cartilage, which ossifies between the eighteenth and twenty-fifth years.. The anterior surface of the body (fig. 350) presents, in the median plane, a triangular crest which forms a small part of the septum of the nose and is termed the sphenoidal crest. The anterior border of this crest articulates with the perpendicular plate of the ethmoid bone. On either side of the crest a rounded opening leads into the corresponding sphenoidal sinus. The sphenoidal sinuses are two large, irregular cavities in the body of the bone, separated from each other by a bony septum which is commonly bent to one or the other side. They vary considerably in form and size, * are seldom symmetrical, and are often partially subdivided by bony laminae. A lateral recess may extend from one or other sinus into the greater wing and lingula; the ...

The medial pterygoid plate (or medial pterygoid lamina) of the sphenoid bone is a horse-shoe shaped process that arises from its underside. It is narrower and longer than the lateral pterygoid plate and curves lateralward at its lower extremity into a hook-like process, the pterygoid hamulus, around which the tendon of the tensor veli palatini glides. The lateral surface of this plate forms part of the pterygoid fossa, the medial surface constitutes the lateral boundary of the choana or posterior aperture of the corresponding nasal cavity. Superiorly the medial plate is prolonged on to the under surface of the body as a thin lamina, named the vaginal process, which articulates in front with the sphenoidal process of the palatine and behind this with the ala (wing) of the vomer. The angular prominence between the posterior margin of the vaginal process and the medial border of the scaphoid fossa is named the pterygoid tubercle, and immediately above this is the posterior opening of the pterygoid ...

A septal deformity maybe caused by trauma, infection, neoplasm or birth trauma. 4%) and the posterior ethmoid sinus (6. It is bordered by the ethmoid air cells anteriorly, clivus posteriorly, cavernous sinuses and cavernous internal carotid arteries laterally, sellae turcica and planum sphenoidale superiorly, and the nasopharynx inferiorly. I have a mucous retention cyst located in my sphenoid sinus cavity. ALTHOUGH mucoceles of the frontal and ethmoidal sinuses are not unusual, they are rarely found in the maxillary and sphenoidal sinuses (1, 4, 6, 10, 12, 13, 23, 27, 30). Sphenoid cephaloceles have been divided into medial perisellar types and lateral sphenoid recess types. Surgical dilation of the sphenoid ostium is a minimally invasive approach to widen the sinus ostium without removing tissue. You can find it in the anterior part of the temporal fossa, superior to the middle of the zygomatic arch. Sphenoid cyst symptoms for shrinking or removal of cysts ? MD. The sphenoid sinus was widely ...

Pneumatization of the sphenoid sinus can extend laterally, creating a lateral recess. Pneumatization can then further extend into the pterygoid process, the great wing of the sphenoid bone (as seen abvoe) or both. This can be clinically relevant, as surgical access to lesions in this lateral recess can be challenging ...

Rose Marie Raccioppi, MS, FABI, is an award winning and honored master educator, an innovative and pioneering sound therapist, poet laureate, artist, advocate, activist, holding graduate degrees with honors in education and psychology. Her published book of poetry, The Wind and the Willow, has been well received nationally and internationally. Pub. Date: June 2008, ISBN-13:9781604744545. She has received organizational, local, state and national honors for her exemplary services to children and families with special educational needs, and for her innovative development in the healing arts. She has been internationally recognized for her inspired poetry and art. She is presently designated, Poet Laureate, Orangetown, New York. Rose Marie is an active blogger, ever ready to share and expand what supports development, potential, well being, creativity and artistry. Rose Marie has been in private practice since 1983 as an educational consultant and sound therapist: http://www.apogeelearning.com ...

PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.

Free Online Library: The optic nerve and the internal carotid artery in the sphenoid sinus. (Rhinoscopic Clinic). by Ear, Nose and Throat Journal; Health, general Carotid sinus Abnormalities Optic nerve Sphenoid bone Physiological aspects

Looking for online definition of sphenoid crest in the Medical Dictionary? sphenoid crest explanation free. What is sphenoid crest? Meaning of sphenoid crest medical term. What does sphenoid crest mean?

Looking for online definition of sphenoid in the Medical Dictionary? sphenoid explanation free. What is sphenoid? Meaning of sphenoid medical term. What does sphenoid mean?

UNVER DOGAN, Nadire et al. Anatomical Examination of the Foramens of the Middle Cranial Fossa. Int. J. Morphol. [online]. 2014, vol.32, n.1, pp.43-48. ISSN 0717-9502. http://dx.doi.org/10.4067/S0717-95022014000100008.. Three foramina can be identified in the greater wing of the sphenoid bone: The foramen rotundum (FR), foramen ovale (FO) and foramen spinosum (FS). In addition, there may be another foramen called foramen ovale accessorium or foramen vesalius (FV) which connects the middle cranial fossa to the fossa pterygoidea (pterygoid fossa). It is described as an opening with smooth walls in front and medial to foramen ovale which leads to an oblique channel directed towards the fossa pterygoidea. FV was present between FO and FR in 14 (31.8%) of 44 dry and 6 (33.3%) of 18 cadaver skullbase sides (total 20 (32.3%) of 62). The diameter values of foramens on both the right and the left side were observed to be almost symmetrical. FRs distance from the midline on the left side was greater than ...

Definition of middle clinoid process. Provided by Stedmans medical dictionary and Drugs.com. Includes medical terms and definitions.

Definition of squamosal margin of greater wing of sphenoid. Provided by Stedmans medical dictionary and Drugs.com. Includes medical terms and definitions.

The classification of maxilla fractures again follows the concept of areas of relative strength within the facial skeleton. There are three principal fracture lines which correspond to relative areas of weakness, and these are referred to as Le Fort fractures. By definition, these fractures must transect the pterygoid process of the sphenoid bone.. Le Fort I. This is a transverse fracture through the inferior maxillary antra, which separates off the alveolar process of the maxilla. The Le Fort I is demonstrated on the OM view with fractures through the medial and lateral walls of the maxillary antra, and the nasal septum.. Le Fort II. This is a pyramidal fracture, which separates off the central portion of the face. The OM radiograph identifies the Le Fort II with fractures through the lacrimal bones, medial orbital walls, infra-orbital rim and lateral walls of the maxillary antra.. Le Fort III. This fracture is characterised by separation of the entire facial skeleton from the skull. The ...

A large avidly enhancing sellar/parasellar and suprasellar mass is evident. It measures 3.9 x 3.8 x 3.1 cm. The lesion invades the sphenoid bone, filling most of the right sphenoid sinus but also involving the left. It also invades into the base of the pterygoid. process on the right and into the adjacent apex of the petrous temporal bone. Posteriorly it invades through the right side of the clivus into the prepontine cistern. High T1 signal material within the remaining sphenoid sinus may represent proteinaceous or haemorrhagic fluid. The lesion is intimately related to the right ICA, from the posterior genu of the cavernous ICA, enveloping it in the cavernous sinus (and invading the cavernous sinus) and closely related to the supraclinoid ICA to just before the bifurcation. Enhancement is still noted within the internal carotid artery. In the suprasellar region it abuts and deforms the optic chiasm and adjacentoptic nerves. A further superior projection which is high T1 signal intrinsically ...

Onodi cell on the right is demonstrated, extending into the anterior clinoid processes. On the left a smaller Onodi cell is noted, but aeration of the left anterior clinioid process is due to a recess of the sphenoid sinus (best seen on coronal images). ...

Medical definition of sphenopalatine foramen: a foramen between the sphenoidal and orbital parts of the vertical plate of the palatine bone; also : a deep notch between these parts that by articulation with the sphenoid bone is converted into a foramen.

Malignant Meninges, Brain, Spinal Cord, Cranial Nerves, Pituitary Gland, Craniopharyngeal Duct and Pineal Gland. Equivalent Terms, Definitions, Charts and Illustrations. Benign and borderline intracranial and CNS tumors have a separate set of rules. . Slideshow 92015 by Jeffrey

This study can also help to evaluate pneumatisation of the anterior clinoid process preoperatively with computed tomography and carotid angiograms to avoid complications such as rhinorrhoea and pneumocephalus.

TY - JOUR. T1 - Microsurgical resection of large medial sphenoid wing meningiomas. T2 - Technique. AU - Rey-Dios, Roberto. AU - Cohen-Gadol, Aaron A.. PY - 2013/6/1. Y1 - 2013/6/1. UR - http://www.scopus.com/inward/record.url?scp=84879684677&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=84879684677&partnerID=8YFLogxK. U2 - 10.1227/NEU.0b013e318288a21f. DO - 10.1227/NEU.0b013e318288a21f. M3 - Comment/debate. C2 - 23361325. AN - SCOPUS:84879684677. VL - 72. SP - ons183. JO - Neurosurgery. JF - Neurosurgery. SN - 0148-396X. ER - ...

Meningiomas have been divided into three types based on their patterns of growth. Histological factors that increase the grade include a high number of mitotic figures, necrosis and local invasion. Treatment of sphenoid wing meningiomas often depends on the location and size of the tumor. Gamma knife radiation and microscopic surgery are common options. Their encapsulated, slow growth makes meningiomas good targets for radiosurgery. In one series, less than one-third of clinoidal meningiomas could be completely resected without unacceptable risk of damaging of blood vessels (especially the carotid artery) or cranial nerves, risks that are lower with radiosurgery. If surgery is done and the entire tumor cannot be removed, then external beam radiation helps reduce recurrence of the growth. Most all meningiomas grow very slowly and almost never metastasize to other parts of the body. In part because of its slow growth, if a tumor is asymptomatic and found only by imaging, the best course is often ...

Watch as Dr. Czabanka navigates delicate territory to expose and excise a meningioma from the sphenoid wing of a symptomatic patient. Use of the microscope becomes crucial to prevent damage to healthy tissue while devascularizing the tumor ...

Watch as Dr. Czabanka navigates delicate territory to expose and excise a meningioma from the sphenoid wing of a symptomatic patient. Use of the microscope

Sphenoid wing meningiomas are slow growing tumors that originate from outer arachnoid meningeal epithelial cells. They are the most common tumor of the intracranial space to spread to the orbit.[1][2]

The illustration presents the cranial nerves within the cavernous sinus, their relationship to the pituitary gland, vascular structures and dural boundaries through both lateral view and coronal section. The trajectory change of the cranial nerve IV before going through the superior fissure was specifically addressed, which was oftentimes overlooked. Using DICOM data enables more accurate visualization of the sagittal cut of the sphenoid bone at the superior fissure, where harbors the complexity of vascular and neural structures. An overview of the skull with brain, cavernous sinus and internal carotid artery layered in, is also portrayed for orientation purposes. ...

The cavernous sinuses are paired dural venous sinuses. Gross anatomy The cavernous sinus is located on either side of the pituitary fossa and body of the sphenoid bone between the endosteal and meningeal layers of the dura. It spans from the a...

Using vibration of the bones of the skull can be a useful tool for singers developing resonance. Here, well look at the sella turcica, part of the sphenoid bone.

Prelab should consist of reading the lab manual and dissector answers and viewing the dissection video. To begin your study, you may find it useful to look over the Netters or LWW Atlas images listed below. 1. Review the osteology of the skull. (Play movie) Plate N7, TG7-05 identifies the calvaria of the skull and plates N8, N9, N11, TG7-06, TG7-07 show the base of the skull from different angles. The anterior, middle, and posterior cranial fossae are identified in plate N9, TG7-07. Plates N6, TG7-08, N9, TG7-07 label the crista galli, greater and lesser wings of the sphenoid bone, and sella turcica. Plate N9, TG7-07 shows the clivus, petrous ridge of temporal bone (labeled petrous part), and the internal occipital protuberance. Plates N6, TG7-08, N8, TG7-06, and N11, TG7-07 label the foramen magnum. Plates N6, TG7-08, N9, TG7-07 idenitfy the cribriform plate of the ethmoid bone. Plate N2, TG7-57, N11, TG7-07 give views of the optic canal and superior orbital fissure. Plate N11, TG7-07 labels ...

Hi my name is Rosanne, im 52 and I have recently been diagnosed with a 1cm left anterior clinoid meningioma that was found because of left peripheral vision loss. Im looking to connect with others who have had the surgery to remove this tumor to find out their outcomes, recommendations, […]

The internal carotid artery enters the skull and supplies the anterior part of the brain (via cerebral branches), the eye and its appendages, and sends branches to the forehead and nose. It has many curvatures in different parts of its path. When it passes through the carotid canal and the side of the body of the sphenoid bone, it has...

The clinical presentation, imaging, treatment, and pathology of a case of neuroglial heterotopia in the nasopharynx causing airway obstruction in a newborn are reported from Columbus Childrens Hospital, OH. MRI and CT showed a cystic mass filling the nasopharynx with a midline bony defect in the sphenoid bone above the clivus. Posterior nasal endoscopy visualized the cystic lesion prior to surgical removal. Connection with CSF and subarachnoid space was excluded. At 6-month follow-up, developmental miletones were normal, and repeat CT showed no evidence of recurrence of the mass. Histopathology of the lesion showed choroid plexus, glial, and respiratory-like epithelial cells. [1]. COMMENT. Reviewing the literature, the authors found reports of 30 cases of pharyngeal neuroglial heterotopia. Both CT and MRI are recommended in the assessment of nasopharyngeal masses. CT visualizes any bony deformities of the skull base, and MRI detects intracranial connections through the skull defect. ...

2Ankara Numune Research and Education Hospital, Department of Pathology, Ankara, Turkey DOI : 10.5137/1019-5149.JTN.9285-13.1 AIM: The authors review their experience in the endoscopic endonasal transsphenoidal treatment of 5 patients, finally diagnosed as primary hypophysitis but initially assumed to be pituitary adenomas.. MATERIAL and METHODS: A retrospective study was undertaken to review 5 cases of primary non-necrotizing granulomatous hypophysitis (1.61%) through 310 endoscopic transsphenoidally operated cases with the diagnosis of pituitary adenoma between 2009 and 2013. All 5 cases were female without any background of autoimmunity or recent pregnancy. The initial presumptive diagnosis was pituitary adenoma for all patients. The endocrinological diagnoses of the patients were suspected Cushings Disease, anterior pituitary deficiency with hyponatremia, hyperprolactinemia, and acromegaly. One of the patients had normal hormonal levels. All patients had macroadenomas including one invasive ...

Injury to the cavernous internal carotid artery is an unusual and serious complication of transsphenoidal surgery. Two such patients with injury to the carotid artery, referred for endovascular treatment, are reported. The clinical course and successful treatment of these patients, one with an intra …

The authors analyzed routine skull CT scans from 24 patients with no brain pathology or fractures and measured the interoptic distance at the level of the limbus sphenoidale, the chiasmatic groove sulcal length and width, and the angle of the suprasellar notch.. Indeed, the suprasellar notch was defined as the angle between 2 lines, the first passing through the tuberculum sellae midpoint and perpendicular to the cribriform plate, and a second line passing between 2 points, the midpoints of the limbus sphenoidale and the tuberculum sellae. Moreover, the authors performed on 15 cadaveric heads an endoscopic endonasal transplanum transtuberculum approach with the aid of a neuronavigator to achieve a step-by-step comparison with the radiological data. The whole CT scanning set was statistically analyzed to determine the statistical interdependency of the suprasellar notch angle with the other 3 measurements, that is, the sulcal length at the midline, the interoptic distance at the optic canal ...

TY - JOUR. T1 - In Reply to the Letter to the Editor Regarding Treatment Strategy for Tuberculum Sellae Meningiomas Based on Preoperative Radiologic Assessment. AU - Kuga, Daisuke. AU - Toda, Masahiro. AU - Yoshida, Kazunari. PY - 2019/5/1. Y1 - 2019/5/1. UR - http://www.scopus.com/inward/record.url?scp=85062600070&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=85062600070&partnerID=8YFLogxK. U2 - 10.1016/j.wneu.2019.01.260. DO - 10.1016/j.wneu.2019.01.260. M3 - Comment/debate. AN - SCOPUS:85062600070. VL - 125. JO - World Neurosurgery. JF - World Neurosurgery. SN - 1878-8750. ER - ...

Spontaneous reossification of the sellar floor after transsphenoidal surgery has been rarely reported. Strontium ranelate, a divalent strontium salt, has been shown to increase bone formation, increasing osteoblast activity. We describe an unusual case of a young patient with Cushings disease who was treated with strontium ranelate for low bone mass who experienced spontaneous sellar reossification after transsphenoidal surgery. A 21-year-old male presented with Cushings features. His past medical history included delayed puberty diagnosed at 16 years, treated with testosterone for 3 years without further work-up. He was diagnosed with Cushings disease initially treated with transsphenoidal surgery, which was not curative. The patient did not come to follow-up visits for more than 1 year. He was prescribed strontium ranelate 2 g orally once daily for low bone mass by an outside endocrinologist, which he received for more than 1 year. Two years after first surgery he was reevaluated and ...

Last updated: 8/5/2016. Cause. The cause of these tumors is not well understood; however, researchers suspect that they begin during the early stages of development in pregnancy (embryogenesis) and may result from metaplasia (abnormal transformation of cells). Craniopharyngiomas are thought to arise from epithelial remnants of the craniopharyngeal duct or Rathkes pouch, which are developmental structures related to gut (stomach) formation. Embryonic cells (early fetal cells) from abnormal development of the craniopharyngeal duct or anterior pituitary gland may give rise to a craniopharyngioma. These tumors are closely related to another cystic mass occasionally seen in the pituitary called Rathkes cleft cyst.[3][4][5]. Last updated: 8/5/2016. Treatment. There are several different types of treatment for craniopharyngiomas which may include a combination of the following: surgery to remove the full or partial tumor (resection), radiation therapy, cyst drainage, chemotherapy, and biologic ...

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Planum sphenoidale and tuberculum sella meningiomas arise from the floor of the anterior cranial fossa near the midline and present with visual disturbances due to compromise of the optic nerves and chiasm necessitating surgical removal in most cases. The traditional craniotomy and open surgical removal with decompression of the optic apparatus has been effectively used for many years.. A minimally invasive cranial approach via a supraorbital incision and bone opening is also reportedly used quite effectively to remove these tumors. Another option is the endoscopic endonasal approach (EEA) that has been increasingly used for this purpose over the past decade, and in experienced hands, has proven to be a safe and effective option as well. To date, the literature is limited primarily to small single institution, retrospective studies and meta-analyses comparing outcomes between the EEA and transcranial approaches. Here are a few seminal reviews.. In 2012, Komotar et al., published a meta-analysis ...

These images demonstrate a large T1 hyperintense, T2 hypointense mass which expands the sphenoid sinus distorting and lifting the anterior sella,,...

Learn more about sphenoid injuries and fractures in personal injury cases and the settlement value of claims with this very severe injury.

Temporal Sphenoidal Diagnosis is a technique for rapidly assessing spinal, organ, and soft-tissue disruptions. The technique was conceived in the early 1960s by Dr. M. B. DeJarnette and expanded by Dr. M. L. Rees.. Dr. DeJarnette gave Dr. Rees research data for a promising new hypothesis, and Dr. Rees took it further by mapping points on the skull and their relationships to the spine, organs, and glands.. ...

Adenocarcinoma of sphenoidal sinus|Carcinoma of sphenoidal sinus|Malignant melanoma of sphenoidal sinus|Malignant melanoma of sphenoidal sinus (disorder)|Malignant tumor of sphenoid sinus|Malignant tumor of sphenoid sinus (disorder)|Malignant tumour of sphenoid sinus|Melanoma of sphenoidal sinus|Primary adenocarcinoma of sphenoidal sinus|Primary adenocarcinoma of sphenoidal sinus (disorder)|Primary carcinoma of sphenoidal sinus|Primary carcinoma of sphenoidal sinus (disorder)|Primary malignant neoplasm of sphenoidal sinus|Primary malignant neoplasm of sphenoidal sinus (disorder)|Primary squamous cell carcinoma of sphenoidal sinus|Primary squamous cell carcinoma of sphenoidal sinus (disorder)|Squamous cell carcinoma of sphenoidal sinus

The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones[MESH]. The middle fossa, deeper than the anterior cranial fossa, is narrow medially and widens laterally to the sides of the skull. It is separated from the posterior fossa by the clivus and the petrous crest. It is bounded in front by the posterior margins of the lesser wings of the sphenoid bone, the anterior clinoid processes, and the ridge forming the anterior margin of the chiasmatic groove; behind, by the superior angles of the petrous portions of the temporal bones and the dorsum sellC&; laterally by the temporal squamC&, sphenoidal angles ...

TY - JOUR. T1 - Indications and limitations of endoscopic endonasal surgery. AU - Yoshimoto, Koji. AU - Mukae, Nobutaka. AU - Kuga, Daisuke. AU - Iihara, Koji. PY - 2017/1/1. Y1 - 2017/1/1. N2 - The introduction of endoscopy, in conjunction with the technical development of endoscopy such as high definition and 3D, has had a significant impact on the field of endonasal transsphenoidal surgery. Cur-rently, endoscopic surgery is applied for the resection of not only sellar tumors but also parasellar tumors such as anterior skull base tumors, intraorbital tumors, cavernous sinus tumors, infratemporal fossa tumors, clival tumors, and others. Endoscopic endonasal surgery is expected to be used more frequently in the near future. In this paper, based on our own experiences and after reviewing the recent publications, we summarize the indications for endoscopic surgery, focusing on pituitary tumors, craniopharyngiomas, and tuberculum sellae meningiomas. In pituitary tumor surgery, operative results by ...

The authors present the technical and anatomical nuances needed to perform an endoscopic endonasal removal of a tuberculum sellae meningioma. The patient is a 47-year-old female with headaches and an incidental finding of a small tuberculum sellae meningioma with no vascular encasement, no optic canal invasion, but mild inferior to superior compression of the cisternal segment of the left optic nerve. Neuroophthalmology assessment revealed no visual defects. Treatment options included clinical observation with imaging follow-up studies, radiosurgery, and resection. The patient elected to undergo surgical removal and an endonasal endoscopic approach was the preferred surgical option. Preoperative radiological studies showed the presence of an osseous ring between the left middle and anterior clinoids, the so-called carotico-clinoidal ring. The surgical implications of this finding and its management are illustrated. The surgical anatomy of the suprasellar region is reviewed, including concepts ...

Objective Rathkes cleft cysts (RCCs) are quite uncommon sellar lesions that can extend or even arise in the suprasellar area. The purpose of this study is to evaluate the effectiveness of both standard and extended endoscopic endonasal approaches in the management of different located RCCs. Methods We retrospectively analyzed a series of 29 patients (9 males, 20 females) complaining of a RCC, who underwent a standard or an extended endoscopic transsphenoidal approach at the Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, of the Università degli Studi di Napoli Federico II

TY - JOUR. T1 - Toxicity profiles of fractionated radiotherapy, contemporary stereotactic radiosurgery, and transsphenoidal surgery in nonfunctioning pituitary macroadenomas. AU - Chang, Chia Lun. AU - Yuan, Kevin Sheng Po. AU - Wu, Alexander T.H.. AU - Wu, Szu Yuan. PY - 2019/11. Y1 - 2019/11. N2 - Background: Here, we compared the toxicity profiles of contemporary stereotactic radiosurgery (SRS), modern fractionated radiotherapy (FRT), and transsphenoidal surgery used to treat non functioning pituitary macroadenomas. Methods: We included the data of patients with non functioning pituitary macroadenomas. To compare treatment outcomes, the patients were categorized groups 1 (those receiving modern FRT), 2 (those receiving contemporary SRS), and 3 (those receiving transsphenoidal surgery). The multivariable Cox proportional hazards regression analysis was performed to yielded adjusted hazard ratios (aHRs) and their 95% CIs for local recurrence in groups 2 and 3 compared with group 1. Results: We ...

TY - JOUR. T1 - Endoscopic treatment of the isolated sphenoid sinus lesions. AU - Castelnuovo, Paolo. AU - Pagella, Fabio. AU - Semino, Lucia. AU - De Bernardi, Francesca. AU - Delù, Giovanni. PY - 2005/2. Y1 - 2005/2. N2 - Presenting symptoms of the isolated sphenoid sinus lesion are often vague and non-specific. Diagnostic nasal endoscopy procedures and imaging techniques are of great value for an early and precise diagnosis. Moreover, endoscopic sinus surgery is a safe and effective technique that allows a direct route to the sphenoid sinus. Because of its close vicinity to important and vulnerable structures of the skull base, delay in diagnosis and treatment can be potentially lethal. Endoscopically controlled procedures for the sphenoid sinus provide the surgeon with an obvious alternative to the traditional approaches. From November 1994 to May 2001 the authors operated on 41 patients with isolated sphenoid lesions. The pathology spectrum was rather wide and included 11 cases of isolated ...

A pseudomeningocele is an abnormal collection of cerebrospinal fluid (CSF) that communicates with the CSF space around the brain or spinal cord. We describe a rare case of spontaneous non-traumatic pseudomeningocele in a 28 year-old gentleman who presented with delayed puberty associated with headache. Computed tomography revealed an expansile mass over bilateral sphenoid sinuses. Magnetic resonance imaging supported the diagnosis of sphenoid mucocele. A transnasal transphenoidal endoscopic sphenoidotomy was performed. Intraoperatively, despite an anatomical puncture through the sphenoid ostium, alarmingly, the opening leaked out CSF. A dehiscent was identified with a dural opening. This was repaired with multilayer technique. Clinical improvement was observed post-operatively. The case reported here is unusual as they presented on imaging as a fluid collection in sphenoid sinus simulating a mucocoele, but were filled with CSF and represent pseudomeningocele. Surgeons should be alert to the ...

The bony walls of the orbital canal in humans do not derive from a single bone, but a mosaic of seven embryologically distinct structures: the zygomatic bone laterally, the sphenoid bone, with its lesser wing forming the optic canal and its greater wing forming the lateral posterior portion of the bony orbital process, the maxillary bone inferiorly and medially which, along with the lacrimal and ethmoid bones, forms the medial wall of the orbital canal. The ethmoid air cells are extremely thin, and form a structure known as the lamina papyracea, the most delicate bony structure in the skull, and one of the most commonly fractured bones in orbital trauma. The lacrimal bone also contains the nasolacrimal duct. The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone.[7]. The roof (superior wall) is formed primarily by the orbital plate frontal bone, and also the lesser wing of sphenoid near the apex of the orbit. The orbital surface ...

2Mustafa Kemal Üniversitesi, Tayfur Ata Sökmen Tıp Fakültesi, Beyin ve Sinir Cerrahisi Anabilim Dalı, Hatay Spheno-orbital meningiomas are usually secondary lesions of the orbit and associated with en plaque meningiomas of the lateral sphenoid wing that have extension into the orbit. These tumors can involve the orbital apex with associated hyperostosis compressing the contents of the orbit and optic nerve. Speheno-orbital meningiomas are more common in females. The most common presenting complaints are proptosis, orbital pain and progressive visual loss. Magnetic resonance imaging is the imaging modality of choice for the radiological workup of suspected spheno-orbital meningiomas and offers fine anatomic resolutions of the tumor and orbital morphology. Computed tomography imaging can play a special role in defining hyperostosis of the sphenoid bone and orbit.. The primary goal of surgery is total removal of the tumor, with improvement or preservation of the preoperative visual status. ...

A total of 27 patients were included in the analysis. The median age was 8 years. Nineteen (70%) patients were male. Presellar, sellar/postsellar, and conchal sphenoid pneumatizations were found in 6, 11, and 10 patients, respectively. There was no significant association between sphenoid pneumatization pattern and extent of resection (gross vs. subtotal, P = .414), postoperative cerebrospinal fluid (CSF) leak (P = .450), intraoperative estimated blood loss (P = .098), total operative time (P = .540), and length of stay (P = .336). On multivariate analysis, after accounting for age, sex, preoperative cranial nerve involvement, and cavernous sinus invasion, there remained no significant association between sphenoid pneumatization pattern and extent of resection (P = .999) and postoperative CSF leak (P = .959).. ...

The pterygopalatine fossa (PPF), less commonly known as the sphenopalatine fossa, is a small but complex space of the deep face in the shape of an inverted pyramid located between the maxillary bone anteriorly, the pterygoid process posteriorly, ...

In vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain. The hypophysis rests upon the hypophysial fossa of the sphenoid bone in the center of the middle cranial fossa and is surrounded by a small bony cavity (sella turcica) covered by a dural fold (diaphragma sellae). The anterior pituitary (or adenohypophysis) is a lobe of the gland that regulates several physiological processes (including stress, growth, reproduction, and lactation). The intermediate lobe synthesizes and secretes melanocyte-stimulating hormone. The posterior pituitary (or neurohypophysis) is a lobe of the gland that is functionally connected to the hypothalamus by the median eminence via a small tube called the pituitary stalk (also called the infundibular stalk or the infundibulum).. Hormones secreted from the pituitary gland help control: growth, blood ...

A 51-year-old woman complained of intermittent nasal obstruction and rhinorrhea. Sinus roentgenograms and polytomograms revealed a small mucocele of the right sphenoid sinus. There was no encroachment of the orbital apex or intracranial contents. The mucocele was marsupialized via an external ethmoidectomy, and the scant tissue present inside the sinus was examined histologically. The pathologic diagnosis was hemangiopericytoma. The small tumor had apparently originated at the sinus ostium, thus creating the mucocele. Several months postoperatively, a small, vascular tumor nodule was noted in the incision. No recurrence was evident intranasally. A course of 5,040 rads of external beam radiation therapy was given to the right ethmoid labyrinth and right sphenoid. Since completing her radiation therapy, there has been no recurrence. This case is of interest because the tumor occurred as a mucocele of the sphenoid sinus.

Patients with problems in mandibles often have tilt of 1st and 2nd cervical vertebra and in this case, one may feel pain from the dura mater pulled to the side from the discord. In case of maxilla covering mandible, inturned teeth or buckteeth, or when mouth left untreated after incision of a tooth, patients with worn out molars have one side of Lateral Pterygoid Muscle shorter than other that the sphenoid bone gets tightened as a result. Then the dura mater connected to the sphenoid one would get pulled to the side end up causing headache. Also, when dura mater gets pulled or contorted, the parasympathetic nerve in the head gets stimulated thus will accelerate its function which would speed up the excretion of saliva and tears and accelerates the production of cerebrospinal fluid causing inter-pressure in the head that would cause such a painful headache ...

Medical definition of sella turcica: a depression in the middle line of the upper surface of the sphenoid bone in which the pituitary gland is lodged.

The intercavernous sinuses (latin: sinus intercavernous) are dural venous sinuses that connect the right and left cavernous sinuses.

A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths ...

A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths ...

The ethmoid bone is located in front of the sphenoid bone. It consists of two masses, one on each side of the nasal cavity, which is joined horizontally by thin cribriform plates. These plates form part of the roof of the nasal cavity, and nerves (ethmoidal cells) associated with the sense of smell pass through tiny openings in them. Portions of the ethmoid bone also form sections of the cranial floor, Continue Scrolling To Read More Below... ...

Sphenoid sinusitis is a frequently misdiagnosed condition. Because the sphenoid sinuses lay hidden within the skull behind the nasopharynx, it can be difficult to identify disease there. Knowing the signs and symptoms may help you determine if a physician should consider the possibility of sphenoid sinusitis.

fig 1. 48-year-old man with deep facial pain, nasal obstruction, anosmia, and rhinorrhea 6 months after surgery for sinonasal polyposis associated with a frontal mucocele. A-B, Coronal CT scans through the pterygoid process show enlargement of the left pterygoid canal (arrow, A) as well as enlargement of the left foramen rotundum (arrow, B).. C, Coronal CT scan more anterior than A and B shows widening and erosion of both infraorbital canals (asterisks). Note the presence of abnormal soft tissue in the maxillary and sphenoidal sinuses.. D, Contrast-enhanced axial T1-weighted MR image (700/12/6 [TR/TE/excitations]) through the base of the skull, obtained with a fat-saturation technique, shows abnormal enhancing tissue in the right and left upper pterygopalatine fossae (black asterisks). Enlargement and enhancement of the infraorbital nerves (white asterisks) and the left pterygoid nerve (arrowhead) can also be seen.. E, Contrast-enhanced coronal T1-weighted MR image (700/12/6) shows enhancement ...

Well today is the first anniversary of my surgery for Acromegaly that I had at Hope Hospital (Salford Royal Hospital) in Manchester (UK). Its hard to believe its been a year. It seems so recent in a way to some extents, but Ive really been enjoying things. Im basically a lot more chilled out that…

A link to a list of current clinical trials is included for each treatment section. For some types or stages of cancer, there may not be any trials listed. Check with your doctor for clinical trials that are not listed here but may be right for you.Non-functioning Pituitary TumorsTreatment may include the following: Surgery (transsphenoidal surgery, if possible) to remove the tumor, followed by watchful waiting (closely monitoring a patients condition without giving any treatment until symptoms appear or change). Radiation therapy is given if the tumor comes back.Radiation therapy alone.Treatment for luteinizing hormone -producing and follicle-stimulating hormone -producing tumors is usually transsphenoidal surgery to remove the tumor.Prolactin-Producing Pituitary TumorsTreatment may include the following:Drug therapy to stop the tumor from making prolactin and to stop the tumor from growing.Surgery to remove the tumor (transsphenoidal surgery or craniotomy) when the tumor does

Pituitary apoplexy is a rare event in pregnancy. A 41-year-old woman with a known pituitary microadenoma presented with visual disturbance and headache during the second trimester of pregnancy. Magnetic resonance imaging (MRI) demonstrated pituitary apoplexy with chiasmal compression. After treatment with corticosteroid therapy, she underwent transsphenoidal excision of the pituitary adenoma. Visual abnormalities were completely restored and pituitary function preserved. There was no evidence of impact on the foetus. The literature on the subject is reviewed with emphasis on the management of the apoplectic patient with mild and stable neuro-ophthalmological signs. ...

The pterygoclival ligament was identified bilaterally during drilling of the sphenoid floor in all specimens. The ligament started a few millimeters posterior to the posterior end of the vomer alae and invariably extended posterolaterally and superiorly to blend into the fibrous tissue around the lacerum ICA. The mean length of the ligament was 10.5 ± 1.7 mm. The mean distance between the anterior end of the ligament and midline was 5.2 ± 1.2 mm. The mean distance between the posterior end of the ligament and midline was 12.3 ± 1.4 mm. The bony pterygoclival groove was identified at the confluence of the vomer, pterygoid process of the sphenoid, and basilar part of the occipital bone, running from posterolateral to anteromedial. The mean length of the groove was 7.7 ± 1.8 mm. Its posterolateral end faced the anteromedial aspect of the foramen lacerum medial to the posterior end of the vidian canal. A clinical case illustration is also provided. ...

The Neurosurgical Atlas depends almost entirely on your donations. We are unable to continue the Atlas without a significant donation from you.. Please commit at least a yearly $250 donation to the Atlas.. Without this commitment, the Atlas will soon require a paid subscription and will become inaccessible to many surgeons around the world whose patients care depend on it. Please donate now!. ...

Sinus infection plagues million of people in the world. A persons whole life style changes when he is suffering from Sinusitis target=_blank>sinusitis. He not only suffers physical change but also psychological change. Conditions that accompany sinus are nasal congestion, extended thick yellow nasal discharge or thin and clear discharge in mild cases, long-lasting front headache, and fever with a sore throat in some cases. There is a wide array of treatments and medications for sinusitis like allopathic medication, herbal, ayurvedic and Chinese as well. Many go in for natural remedies as it seem to more effective and the results are long lasting. Use of harsher drugs like antibiotics or steroidal prescriptions for a longer period can upset the body system ...

The target volume for radiation treatment of nasopharyngeal carcinoma routinely covers the nasopharynx and at least the lower half of the sphenoid sinus, and, hence, these areas are vulnerable to the effects of radiation. In addition, the thin plate of bone separating the floor of the sphenoid sinus from the roof of the nasopharynx is especially vulnerable to osteoradionecrosis, resulting in bony defects that allow direct communication between the sinus and the pharynx. Two nonmalignant patterns of disease are identified in this study, nasopharyngeal polyps and sphenoid sinus masses, though there is some overlap in these 2 patterns. The exophytic markedly enhancing nasopharyngeal polyps, composed of variable amounts of granulation tissue, fibrin, and inflammatory cells, could grow to an alarming size and fill the nasopharyngeal cavity. The sphenoid sinus masses were divided according to whether they showed contrast enhancement. All of the patients with noncontrast-enhancing masses had ...

Endoscopic Pituitary Surgery Endoscopic pituitary surgery, also called transsphenoidal endoscopic surgery, is the most common surgery used to remove pituitary tumors. The pituitary gland is located at the bottom of your brain and above the inside of your nose. It is responsible for regulating most of your bodys hormones, the chemical messengers that travel through your blood. Endoscopic pituitary surgery is done with an instrument called an endoscope. An endoscope is a thin, rigid tube that has a micro...

Endoscopic endonasal surgery is a minimally invasive technique that allows a surgeon to go through the nose to operate on areas at the front of the brain and the top of the spine.

Endoscopic endonasal surgery is a minimally invasive technique that allows a surgeon to go through the nose to operate on areas at the front of the brain and the top of the spine.

Endoscopic endonasal surgery is a minimally invasive technique that allows a surgeon to go through the nose to operate on areas at the front of the brain and the top of the spine.

Background: Transsphenoidal approach to pituitary tumors is a commonly performed procedure with the advantage of a rapid midline access to the sella with minimal complications. It may be associated with wide fluctuations in hemodynamic parameters due to intense noxious stimulus at various stages of the surgery. As duration of the surgery is short and the patients have nasal packs, it is prudent to use an anesthestic technique with an early predictable recovery. Materials and Methods: A total of 60 patients of either sex between 18 and 65 years of age, belonging to the American Society of Anesthesiologists I and II who were undergoing elective transnasal transsphenoidal pituitary surgery were chosen for this study ...

Sphenoidal electrodes are crucial in catering to a non-invasive method in locating the epileptic foci responsible for the occurrence of temporal lobe epilepsy.... ...

2). Spontaneously expectorated sputum specimens from immunocompromised patients are often nondiagnostic. One efficient optimization method is a can you take cymbalta with ativan, quasi-Newton minimization method with bounds (L-BFGS-B) 11, 104. The midpoint of the entrance of the sella (Se) represents the midpoint youu the line connecting the posterior clinoid process and the anterior opening of the sella turcica.

Tegmen is from the Latin verb tego, tegere to cover or shelter. Hence tegmen is the word for roof. Tympani is the possessive form of the Latin noun tympanum meaning a drum. So, the whole phrase just means the roof of the (ear) drum.. Petrous - This adjective is derived from the Latin word for rock petra. It is applied to a part of the temporal bone that is particularly hard and rock-like. You may not have realized that the word petroleum has the same word as one of its roots. The other -oleum is the Latin for oil oleum. Petroleum, coming as it does from the earth, is appropriately named. Also, when Jesus gave the keys of the kingdom to Peter, he chose that apostle because of his rock solid loyalty.. Clinoid - You may have noticed that the anterior and posterior clinoid processes surround the sella turcica like the four corners of a four poster bed. And that is what the word means. Cline is Greek for bed. -oid, as usual, indicates a similarity to. When you encounter clinical teaching, that ...

Craniopharyngiomas (see the image below) are histologically benign neuroepithelial tumors of the CNS that are predominately observed in children aged 5-10 years.{file44804}These tumors arise from squamous cell embryologic rests found along the path of the primitive adenohypophysis and craniopharyngeal duct.

Contre-Coup: rotational shear (anterior and middle skull bases have rigid sphenoid wings and petrous ridges). Rotation causes the frontal and temporal cortices to sweep across these structures and slow down, shearing the axons and ...

PDF Similar Articles Mail to Author Mail to Editor Large Medial Sphenoid Wing Meningiomas: Long-Term Outcome and Correlation with Tumor Size after Microsurgical Treatment in 127 Consecutive Cases Ding-yang LIU, Xian-rui YUAN, Qing LIU, Xin-jun JIANG, Wei-Xi JIANG, Ze-feng PENG, Xi-ping DING, Duan-wu LUO, Jian YUAN ...

Several years went by and we moved farther North where carpets are more commonly used than in the Southwest and I began to once again have cold symptoms. At least thats what we thought at first. Since I was hardly using cows milk and had resumed the allergy injections my wifeand I wondered, what could the cause ofthe post nasal drip, etc.,be this time. So I went back to an allergy specialist in our new area.After doing some testinghe foundI was very allergic to house dust.In the process of being given the allergy tests I found that not all house dustiscreated equal. Some dusts contain large amounts of dust mite droppings. This kind ofmites thrive in a humid and warm environment, like the one produced by the human body while lying in bed,where the miteseat mostly microscopic particles of human skin that rubs off there and on the carpet. The testsdid showI was very allergic to that kind of house dust. Thereupon I was given minute instructions by my doctoron how to shield my ...