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Topic: Sella turcica

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	Bridging and Dimensions of Sella Turcica in Subjects Treated by Surgical-orthodontic Means or Orthodontics Only
		A sella turcica bridge was identified as a continuous band of bony tissue extending from the anterior cranial fossa to the posterior cranial fossa.
		The sella turcica is an important anatomical structure for cephalometric assessment because of its central landmark, sella, a saddle-shaped area of bone located in the middle cranial fossa.
		The sella turcica lies on the intracranial surface of the body of the sphenoid and consists of a central pituitary fossa bounded anteriorly by the tuberculum sellae and posteriorly by the dorsum sellae.
	www.arabmedmag.com /issue-15-05-2005/dentistry/main01.htm (2523 words)

	Sella turcica definition - Medical Dictionary definitions of popular medical terms
		Sella turcica: The "Turkish saddle" in which sits the pituitary gland.
		It was called the sella turcica (the Turkish saddle) because of its resemblance to a saddle used by the Turks (and Arabs) which had supports in front and back.
		The "rider" in the sella turcica, the pituitary gland, (sometimes called the master gland) plays a critical role in regulating growth and development, metabolism, and reproduction.
	www.medterms.com /script/main/art.asp?articlekey=9683 (271 words)

	Reviews in Neurosurgery Vol 1, No 2 (Site not responding. Last check: 2007-09-29)
		For removal of suprasellar tumors such as tuberculum sellae meningiomas or craniopharyngiomas, the dura mater on the planum sphenoidale and tuberculum sellae is incised at the midline to reach the prechiasmatic cistern.
		The sella turcica is filled with fat, and the floor is reconstructed by inserting a piece of bone from the septum, which is affixed with fibrin glue.
		In tumors with a suprasellar extension, a vicryl patch is fixed to the diaphragma with glue, the sella turcica is packed with gelatin foam, and a second vicryl patch is fixed to the sellar floor with gelatin foam and fibrin glue.
	www.wfns.org /principal_reviews6_3.html (4522 words)

	empty sella
		Primary empty sella is an idiopathic form of an empty sella which occurs in the absence of prior pituitary surgery or radiation therapy or medication with DOPA agonists.
		An empty sella syndrome is observed frequently in patients with benign intracranial hypertension.
		This is the investigation of choice, which shows cerebrospinal fluid within the sella turcica, discrimination of the pituitary stalk, pituitary gland and optic chiasm, and allows estimation of the degrees of compression, atrophy, and displacement of the structures.
	www.thamburaj.com /empty_sella.htm (1392 words)

	Empty sella refers to the radiological appearance of an enlarged or deformed sella turcica... (Site not responding. Last check: 2007-09-29)
		Secondary empty sella turcica is one which is associated with an iatrogenic event such as surgery, radiation, or both; or with non-iatrogenic disease such as infarction and infection of the pituitary gland.
		Post-surgical empty sella is related to the removal of pituitary tumours either from the transcranial or transphenoidal route, with the diaphragma sellae incompetent at the end of the procedure.
		Secondary empty sella occurring in patients withnon-surgical complicating events such as irradiation, infection, or infarction in contrast does not occur due to a fresh defect created in the diaphragma sella, but have a diaphragma sellae which is similar to that in the general population.
	www.indegene.com /End/FeatArt/indEndFeatArt6.html (1722 words)

	AANS.org \| Education and Meetings \| AANS Scientific Journals \| Neurosurgical Focus
		The empty sella syndrome (ESS) is well documented in adults and although the same phenomenon of herniation of the arachnoid space into the enlarged sella turcica has been noted in children, it is not widely known that children suffer from this syndrome.
		Empty sella syndrome (ESS) is an anatomical condition in which subarachnoid space herniates into the sella, pushing the pituitary gland either to the bottom or to one side of the sella.
		Empty sella is a term that was first introduced by Busch in l951[4] to describe herniation of the suprasellar arachnoid space, and possibly the optic nerve, into the sella turcica because of a diaphragmatic defect.
	www.aans.org /education/journal/neurosurgical/august99/7-2-cp2.asp?ShowMenu=false&ShowPrint=false (2533 words)

	Palaeos Vertebrates > Bones > Braincase: Sphenoid: Basisphenoid
		"Sella turcica" is Latin for "Turkish saddle." If this is an accurate description, we may marvel all the more at the success and longevity of the Ottoman Empire.
		The sella is at a key point in the skull, as judged by several criteria.
		Consequently, some writers refer to the bone as if it were two different ossifications: the "basipresphenoid" and "basipostsphenoid." The sella turcica itself is at the boundary between the two embryonic domains and includes contributions from both sources.
	www.palaeos.com /Vertebrates/Bones/Braincase/Basisphenoid.html (1980 words)

	ACR Learning File Web (Site not responding. Last check: 2007-09-29)
		The sella is grossly enlarged, and the floor has expanded to obliterate the sphenoid sinus.
		The pituitary gland cannot be identified though the bright signal seen on the mid- sagittal section posteroinferiorly in the floor of the sella may represent the posterior lobe or neurohypophysis.
		The term "empty sella" is used to describe a condition in which the subarachnoid space has extended into the sella turcica, which is usually enlarged.
	www.learningfile.com /learning_file/viewcase.php?section=nu&case_num=431 (682 words)

	Encyclopedia (Site not responding. Last check: 2007-09-29)
		Due to its anatomical location in the sella turcica, expanding lesions of the pituitary may give rise to visual disturbances, cavernous sinus syndrome(s), and headaches.
		The lateral walls of the sella are close to the cavernous sinuses containing the internal carotid arteries, the oculomotor (III), trochlear (IV), and abducens (VI) nerves, and V&sub1; and V&sub2; divisions of the trigeminal (V) nerve.
		The sphenoid sinus lies anteriorly and inferiorly to the pituitary and is separated from it by the inferior portion of the sella, a thin layer of bone.
	www.eamg-med.com /members/encyclopedia/12/12_2.shtml (18232 words)

	Dr. Koop - Empty sella syndrome
		Empty sella syndrome is the absence of the pituitary gland on radiological imaging of the sella turcica, a bony structure that normally partly surrounds the gland.
		When the pituitary gland is not visible on CT or MRI scans of the sella turcica, the condition is referred to as empty sella syndrome.
		When the sella is empty because the pituitary gland has regressed following an injury such as head trauma or an event such as surgery or radiation therapy, the condition is called secondary empty sella syndrome.
	www.drkoop.com /ency/1/000349.html (504 words)

	MedlinePlus Medical Encyclopedia: Empty sella syndrome
		Primary empty sella syndrome occurs when a small defect above the pituitary gland increases pressure in the sella turcica and causes the gland to flatten out along the walls of the sella.
		Primary empty sella syndrome is most often found during radiological imaging of the brain.
		Complications of secondary empty sella syndrome are related to the cause of pituitary gland regression or to the effects of hypopituitarism.
	www.nlm.nih.gov /medlineplus/ency/article/000349.htm (712 words)

	► Empty-sella syndrome
		Absence of the pituitary gland on radiological imaging of the sella turcica, a bony structure that partly surrounds the gland.
		Primary empty sella syndrome occurs when a small anatomical defect above the pituitary gland increases pressure in the sella turcica and causes the gland to flatten out along the walls of the sella.
		Empty sella syndrome is often associated with abnormal pituitary function in children.
	www.umm.edu /ency/article/000349.htm (421 words)

	ANATOMY OF SPHENOID, CAVERNOUS SINUS & TRANS-SPHENOID APPROACH
		The pituitary gland is located inside the sella turcica, a round bony cavity that is separated from the sphenoid sinuses by a thin bone, the floor of the sella which forms part of the roof of the sphenoid sinuses.
		The intersphenoid septum is removed. The floor of the sella turcica is opened to expose the pituitary gland (P) and remove the tumor.
		A chip of bone (or a piece of septal cartilage) is used to reconstruct the floor of the sella turcica. The perpendicular plate of the ethmoid and the mucoperichondrial / periosteal flaps are replaced in the midline. Nasal splints / packs are also placed in the nose.
	www.ghorayeb.com /TransSphenoidAnatomy.html (310 words)

	Endotext.com - Neuroendocrinology, Hypothalamus, And Pituitary - Radiotherapy for Pituitary and Hypothalamic Tumours
		The sella turcica is a shallow depression in the sphenoid bone bounded anteriorly and inferiorly by the sphenoid sinus, laterally by the cavernous sinuses, posteriorly by the dorsum sellae and superiorly by the diaphragma sellae and suprasellar cistern [Figure 1].
		The diaphragma sellae is a thin dural membrane overlying the sella that is fenestrated to allow passage of the infundibulum.
		A macroadenoma is typically seen on MR scans to enlarge the sella turcica or to extend into the adjacent suprasellar cistern, cavernous sinus or sphenoid sinus [FIG 7].
	www.endotext.org /neuroendo/neuroendo4/neuroendo4.htm (2213 words)

	Enlarge the Hole in the Sella Turcica
		We have broken off a piece of the sella turcica and now we need to remove the fragment, which is held in the rongeurs, from the surgical workspace.
		The hole in the sella is the largest that it can get without endangering the patient; the decision to emit this signal is made by the simulator and not by the surgeon.
		The surgeon has indicated to the simulator that the hole in the sella turcica is large enough for the time being.
	www.cs.washington.edu /homes/letchner/INRIA/WebCopy/states/EnlargeHoleSella.html (548 words)

	Endotext.com - Neuroendocrinology, Hypothalamus, And Pituitary - Radiotherapy for Pituitary and Hypothalamic Tumours
		Defects in the diaphragma sellae may allow herniation of the subarachnoid space into the sella causing the gland to become compressed against the dorsal surface of the sella.
		The "bright spot" or neurohypophysis is found in the floor of the third ventricle and is absent from the sella turcica.
		The sella turcica is small and the infundibular stalk is absent.
	www.endotext.org /neuroendo/neuroendo4/neuroendo4_3.htm (1777 words)

	Dr. Fred Schudy: GROWTH INCREMENTS
		The entire profession of orthodontics is aware of the possible movement of sella turcica and nasion during growth.
		Sella horizontal is parallel with Frankfort, which makes it parallel with the earth's surface.
		When the skull grows concentrically around sella turcica, any diameter acts as a divide to the growth which occurs on each side of it.
	www.vsbw.com /~schudyf/art54.html (878 words)

	Transsphenoidal (Large Craniopharyngeal) Canal Associated with a Normally Functioning Pituitary Gland and ...
		sella turcica to the nasopharynx and is less than 1.5 mm in
		On MR imaging of the sella, an enlarged empty sella turcica
		from the floor of the sella turcica to the nasopharynx was detected.
	www.ajronline.org /cgi/content/full/180/1/76 (957 words)

	THE MERCK MANUAL, Sec. 2, Ch. 7, Pituitary Disorders
		Symptoms of hypo- or hyperpituitary secretion are the most common complaints of patients presenting with pituitary or hypothalamic neoplasms, but the symptoms may have other causes.
		A mass involving the hypothalamus or pituitary also should be suspected if the sella turcica is enlarged on skull x-ray or if neurologic symptoms and signs suggest compression of the optic chiasm (especially bilateral hemianopia).
		Pituitary functions in patients with empty sella syndrome are frequently normal, but hypopituitarism may be present.
	www.merck.com /pubs/mmanual/section2/chapter7/7a.htm (211 words)

	What is empty sella syndrome? - Endocrinology Health Guide
		Empty sella syndrome is common in women who are overweight or have high blood pressure.
		Characterized by an enlarged bony structure (sella turcica) that houses the pituitary gland at the base of the brain, the disorders sometimes results in high fluid pressure inside the skull.
		If there are no other symptoms, and if the pituitary gland is not enlarged, treatment may not be necessary for empty sella syndrome.
	www.umm.edu /endocrin/sella.htm (219 words)

	Sella & Parasellar Regions
		The pituitary gland lies within a bony depression called the sella turcica within the sphenoid bone at the base of the brain.
		Over time, CSF pulsations enlarge the sella and compress the gland against the floor of the sella.
		The presence of high signal intensity adjacent to the median eminence with absence of the normal pituitary bright spot within the sella on T1-weighted images is evidence for the ectopic pituitary.
	spinwarp.ucsd.edu /NeuroWeb/Text/br-370.htm (3949 words)

	Empty sella syndrome - MedPix Medical Image Database and Teaching Files (Site not responding. Last check: 2007-09-29)
		This syndrome may occur in the absence of a recognized pituitary tumor and is either primary, resulting from a congenital diaphragmatic defect which is thought to allow CSF pressure to enlarge the sella, or secondary, resulting from an injury to the diaphragm by pituitary surgery, radiation, or infarction.
		Secondary empty sella syndrome is observed in patients with otherwise benign cerebrospinal fluid hypertension and in patients with a loss of pituitary function from apoplexy or surgical therapy.
		In primary empty sella, the stalk is usually diplaced posteriorly, and the pituitary tissue is flattened against bony rim of the floor and dorsum of the sella turcica.
	rad.usuhs.mil /medpix/medpix.html?mode=single&comebackto=mode=geo_browse&recnum=5561 (375 words)

	Empty Sella Syndrome: Pituitary Gland Disorders: Merck Manual Home Edition
		In empty sella syndrome, the sella turcica (the bony structure at the base of the brain that houses the pituitary gland) enlarges, but the pituitary remains normal-sized or shrinks.
		People with empty sella syndrome have a defect in the tissue barrier that normally keeps the cerebrospinal fluid around the brain separate from the sella turcica.
		The sella turcica may enlarge, and the pituitary gland may shrink.
	www.merck.com /mmhe/ag/sec13/ch162/ch162g.html (242 words)

	Pituitary Tumors
		The manifestations of a pituitary tumor depend on the hormone secreted by the tumor as well as the pattern of growth of the tumor within the sella turcica.
		These tumors are initially confined to the sella turcica, but may enlarge and become invasive after bilateral adrenalectomy (Nelson's syndrome).
		Transsphenoidal surgery is the usual treatment of choice for lesions confined within the sella turcica.
	www.medhelp.org /lib/cancernet/101273.htm (1557 words)

	Cancer Types - Pituitary Tumors
		It is located in a small crevice called the sella turcica at the base of the skull.
		The sella turcica is located underneath the optic chiasm, which is the crossing point of the two vision nerves (optic nerves).
		By working behind the region of the nose and attacking the tumor from underneath the sella turcica, the tumor can be removed.
	www.lifebridgehealth.org /body.cfm?ID=3282 (1385 words)

	Skull 4a
		The superior surface of the sphenoid bone contains a saddle-like depression called the sella turcica that encloses the pituitary gland.
		Just superior and anterior to the sella turcica are the lesser wings of the sphenoid.
		Lateral to the sella turcica are the butterfly-shaped greater wings of the sphenoid bone.
	bioweb.uwlax.edu /APlab/Table_of_Contents/Lab_03/Skull_4/Skull_4a/skull_4a.html (237 words)

	[No title]
		The first type, described as conchal (5%), exists when the posterior extent of the sphenoid sinus is well anterior to the sella turcica.
		The sellar or postsellar type (67%) occurs when the sphenoid sinus extends past the level of the sella turcica to approach the pons posteriorly, allowing the sella to make a superior indentation in the sinus.
		Approaches Surgical approaches to the sphenoid sinus began in the early 20th century as recognition of sellar tumors became known with advances in neurology, pathology, and radiology.
	www.utmb.edu /otoref/Grnds/Sphenoid-200010/Sphenoid-0010.doc (3997 words)

	Trans Sphenoid Approach for Pituitary Tumors- Informed Consent- Dr. Ghorayeb
		After the tumor is removed, the nasal septum is returned to its midline position. The incision is closed with absorbable sutures that do not need removal. The nose is packed for two to three days.
		Other problems are related to the removal of the tumor. The most common are cerebrospinal fluid (CSF) leak, diabetes insipidus, and other hormone-related problems. These complications are better discussed with the neurosurgeon.
		Finally, in selected cases, a piece of abdominal fat or a piece of fascia lata from the leg are used for closing the sella. Like any other wound in the body, these are prone to the same undesirable results, from wound infection, to keloid formation and possibly, infection.
	www.ghorayeb.com /TransSphenoidConsent.html (311 words)

	Empty Sella Syndrome
		It is possible that the main title of the report Empty Sella Syndrome is not the name you expected.
		The primary from of empty sella syndrome is a rare inherited disorder of the brain that is transmitted as an autosomal dominant trait.
		The disorder is characterized by an empty space filled with cerebrospinal fluid in the sella turcica area of the brain.
	www.webmd.com /hw/brain_nervous_system/nord635.asp (442 words)

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