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Topic: Third ventricle

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	Third ventricle -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22)
		The third ventricle is one of the four connected fluid-filled cavities within the human (That part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord) brain.
		It is a median cleft between the two thalami, and is filled with (Clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord) cerebrospinal fluid (CSF).
		The third ventricle is bounded by the (Large egg-shaped structures of gray matter that form the dorsal subdivision of the diencephalon) thalamus and (A basal part of the diencephalon governing autonomic nervous system) hypothalamus on both the left and right sides.
	www.absoluteastronomy.com /encyclopedia/t/th/third_ventricle.htm (311 words)

	IX. Neurology. 4c. The Fore-brain or Prosencephalon. Gray, Henry. 1918. Anatomy of the Human Body. (Site not responding. Last check: 2007-10-22)
		The medial surface constitutes the upper part of the lateral wall of the third ventricle, and is connected to the corresponding surface of the opposite thalamus by a flattened gray band, the massa intermedia (middle or gray commissure).
		The under surface rests upon the tela chorioidea of the third ventricle, which separates it from the epithelial roof of that cavity, and from the medial portions of the upper surfaces of the thalami.
		The tela chorioidea of the third ventricle (tela chorioidea ventriculi tertii; velum interpositum) (Fig.
	www.bartleby.com /107/189.html (13328 words)

	Third Ventricle
		The third ventricle is one of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
		The third ventricle is a median (midline) cavity in the brain that is bounded by the thalamus and hypothalamus on either side.
		The ventricles are filled with cerebrospinal fluid, which is formed by structures called choroid plexuses located in the walls and roofs of the ventricles.
	www.psyweb.com /Brain/3vent.jsp (120 words)

	MedFriendly.com: Third ventricle (Site not responding. Last check: 2007-10-22)
		ROOF: The narrow roof of the third ventricle is formed by a thin membrane known as the tela choroidea.
		The area that connects the third ventricle with each of the lateral ventricles is known as the interventricular foramen of Monro (also known as the interventricular foramen and the foramen of Monro).
		The area that connects the third ventricle with the fourth ventricle is known as the cerebral aqueduct (also known as the sylvian aqueduct).
	www.medfriendly.com /thirdventricle.html (1430 words)

	AANS.org \| Education and Meetings \| AANS Scientific Journals \| Neurosurgical Focus
		The endoscopic removal of third and lateral ventricle cysticercal cysts, combined with a third ventriculostomy or septum pellucidotomy in selected cases, is an effective treatment in patients with hydrocephalus and should be considered the primary treatment for this condition.
		In five cases, the lateral and third ventricles were dilated, whereas the fourth ventricle was normal in size--a pattern interpreted to be consistent with aqueduct obstruction.
		The preoperative CT and MR imaging studies revealed a cystic lesion in the anterior third ventricle that obstructed the foramina of Monro bilaterally and caused obstructive hydrocephalus.
	www.aans.org /education/journal/neurosurgical/apr99/6-4-7.asp?ShowMenu=false&ShowPrint=false (6431 words)

	Third ventriculostomy refers to the surgical creation of a communicating channel between one of the brain's interior ...
		Third ventriculostomy refers to the surgical creation of a communicating channel between one of the brain's interior fluid chambers, the third ventricle, and an external fluid cistern on the underside of the brain.
		In 1968 a surgeon reported on 15 patients who had a catheter placed via a small hole in the skull through the third ventricle penetrating its floor to rest straddling the floor with inlets in both the third ventricle and interpedunicular cistern.
		Only 40% of the third ventriculostomies done to treat hydrocephalus in children with brainstem gliomas have been successful (5 cases) and we have seen a 100% failure rate for third ventriculostomies in the 5 infants with myelomeningoceles and associated hydrocephalus.
	nyneurosurgery.org /hydro_3rdv.htm (788 words)

	USCAP 2003 Annual Meeting
		An MRI scan revealed a homogeneously contrast-enhancing tumor in the third ventricle, measuring 3 cm in greatest diameter, which appeared to arise in the hypothalamic/suprasellar region.
		The specificity of chordoid glioma to the third ventricular region may be explained by the unique anatomic location of a neoplastic precursor population in the subventricular region of the third ventricle.
		Chordoid glioma of the third ventricle: immunohistochemical and molecular genetic characterization of a novel tumor entity.
	www.uscap.org /site~/92nd/specneurh1.htm (930 words)

	CV (Site not responding. Last check: 2007-10-22)
		The third cerebral ventricle is a narrow vertical cavity located in the midline between the two halves of the diencephalon.
		In the midline of the dorsolateral wall the third ventricle becomes continuous with the narrow cerebral aqueduct (of Sylvius) which traverses the periaqueductal grey matter of the midbrain.
		The infundibular stem or stalk attaches the posterior lobe of the pituitary gland to the basal hypothalamus in the midline.
	www.umanitoba.ca /faculties/medicine/units/anatomy/cv-third.htm (227 words)

	Chordoid Glioma (Site not responding. Last check: 2007-10-22)
		The term chordoid glioma of the third ventricle was first used to describe a rare and slowly growing neoplasm of uncertain histogenesis, with chordoid appearance, occurring preferentially in middle-aged women.
		Chordoid gliomas are uncommon primary brain tumors that arise in the region of the third ventricle.
		Chordoid glioma is a rare benign neoplasm of uncertain histogenesis occurring in the third ventricle/ /suprasellar region.
	www.thedoctorsdoctor.com:16080 /diseases/chordoid_glioma.htm (3270 words)

	Choroid plexus papilloma of the posterior third ventricle during infancy & childhood: Report of two cases with ...
		A repeat CT brain scan revealed an iso-attenuation lesion at the region of the posterior third ventricle with significant enhancement on contrast administration with a papery thin cerebral cortex and grossly dilated lateral and third ventricles.
		Prenatal diagnosis of a third ventricle choroid plexus papilloma.
		Choroid plexus papilloma of the third ventricle in an infant.
	www.neurologyindia.com /article.asp?issn=0028-3886;year=2003;volume=51;issue=3;spage=379;epage=382;aulast=Pawar (2506 words)

	TheFetus.net - Interhemispheric cyst -Patricia Karstaedt, MD, Philippe Jeanty, MD, PhD
		In the absence of the corpus callosum, the third ventricle tends to be indented and extends superiorly into the interhemispheric fissures, forming an interhemispheric cyst containing cerebrospinal fluid.
		Absence of forebrain commissures,, dilatation of the roof of the third ventricle.
		Absence of the corpus callosum with dilatation of the roof of the third ventricle.
	www.thefetus.net /page.php?id=121 (2099 words)

	University of Miami School of Medicine - Glossary - Third ventricle
		Third ventricle: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
		The lateral ventricles communicate with the third ventricle through what is called the interventricular foramen (opening).
		The fourth ventricle is the most inferior (lowest) of the four ventricles of the brain.
	www.med.miami.edu /glossary/art.asp?articlekey=9165 (234 words)

	Colloid Cyst Of The Third Ventricle (Site not responding. Last check: 2007-10-22)
		Weisberg LA. Clinical-computed tomographic correlations in colloid cysts of the third ventricle.
		MR and CT of masses of the anterosuperior third ventricle.
		Colloid cyst of the third ventricle presenting as a ring-enhancing lesion on computed tomography.
	home.earthlink.net /~radiologist/tf/062402.htm (199 words)

	MedFriendly.com: Lateral ventricles (Site not responding. Last check: 2007-10-22)
		The bottom of the lateral ventricle is known as the inferior horn of the lateral ventricle.
		The area that connects the lateral ventricles with the third ventricle is known as the interventricular foramen of Monro (also known as the interventricular foramen and the foramen of Monro).
		The choroid plexus, which are the blood vessels in the lateral ventricle that produce cerebrospinal fluid, are found in the central part of the lateral ventral and the inferior horn, but not in the anterior or posterior horns.
	www.medfriendly.com /lateralventricles.html (1084 words)

	JPMA... (Site not responding. Last check: 2007-10-22)
		At operation the previous gyrotomy was reopened and the remaining tumor was excised from the third ventricle using the dilated foramen of Monro.
		Although CPP is one of the neoplasms frequently observed to occur primarily within the ventricular system, it rarely involves the third ventricle; its incidence is 10% or less of all CPPs.5-7 These lesions typically manifest with macrocephaly and signs of raised intracranial pressure.
		Various approaches have been utilized to approach third ventricular tumors including transcallosal, supracerebellar infratentorial and trans-frontal, transforaminal routes.8-10 We believe that the approach should be individualized based upon the location, anatomy, size, blood supply and extension through the Foramen of Monro.
	jpma.org.pk /JPMA/11Nov03/studentGiant.htm (810 words)

	CV (Site not responding. Last check: 2007-10-22)
		There are four ventricles (paired lateral, third and fourth) that communicate with each other, with the central canal (of the spinal cord), and with the subarachnoid space (SAS) that surrounds the central nervous system.
		The frontal horns of the lateral ventricle extend from the body of the ventricle (at the level of the the interventricular foramen) into the frontal lobes of the brain.
		The body of the lateral ventricle is a triangular cavity that extends from the interventricular foramen, anteriorly to the level of the splenium of the corpus callosum, posteriorly.
	www.umanitoba.ca /faculties/medicine/anatomy/cv.htm (666 words)

	MR Ventriculography for the Study of CSF Flow -- Joseph et al. 24 (3): 373 -- American Journal of Neuroradiology
		There is dilatation of the lateral and third ventricles that cannot be explained by the location of the mass.
		The anterior recesses of the third ventricle (white arrow) and the massa intermedia (fl arrow) are clearly visible.
		E, Sagittal MR ventriculogram after third ventriculostomy shows contrast material in the dependent portion of the lateral ventricle and the third ventricle (thick arrow).
	www.ajnr.org /cgi/content/figsonly/24/3/373 (1198 words)

	Chris Walker \| Real Spirit: (Site not responding. Last check: 2007-10-22)
		The pineal gland is located in the posterior end of the third ventricle of the brain and the pituitary gland is located in the roof of the third ventricle.
		The third ventricle of the brain is a narrow opening lying near the base of the cerebral hemispheres and separating the two thalamic areas.
		When the two awakened chakras’ essences meet in the third ventricle, there is the union and harmony of spirit into matter as the multidimensional forces of spiritual light merge with the matter of our third dimensional brain.
	www.walkerinternational.com /article579.html (1222 words)

	Colloid Cyst of Third Ventricle (Site not responding. Last check: 2007-10-22)
		The CT demonstrates a colloid cyst of the third ventricle.
		While unrelated to the trauma, this diagnosis may be a relative neurosurgical emergency, as cases of acute raised intracranial pressure and sudden death have been observed.
		Nitta M; Symon L. Colloid cysts of the third ventricle.
	home.flash.net /~drrad/tf/011397.htm (199 words)

	Colloid Cyst of Third Ventricle (Site not responding. Last check: 2007-10-22)
		Nonenhanced computed tomographs (CT) of the head demonstrate a hyperdense, round structure in the third ventricle (arrows), near the confluence of the foramina of Munro.
		There is enlargement of the lateral ventricles, effacement of the sulci, and transependymal cerebrospinal fluid leak (arrows), consistent with acute hydrocephalus.
		Colloid cysts are smooth, round lesions of endodermal origin, typically located at the foramen of Munro in the anterior aspect of the third ventricle.
	brighamrad.harvard.edu /Cases/bwh/hcache/51/full.html (314 words)

	Nurse Practitioner: Not just another headache: Colloid cyst of the third ventricle (Site not responding. Last check: 2007-10-22)
		The workup began with a head CT that revealed a lesion in the third ventricle consistent with a colloid cyst, and diagnosis was confirmed with a MRI.
		Colloid cysts are lesions that occur primarily in the third ventricle and represent 0.3% to 2.0% of all brain tumors.3,4 Although histologically benign, colloid cysts can produce life-threatening situations by obstructing the foramen of Monro followed by acute hydrocephalus.
		Colloid cysts of the third ventricle continue to fascinate neurosurgeons, but there is still debate over optimal treatment.
	www.findarticles.com /p/articles/mi_qa3958/is_200309/ai_n9285362 (1350 words)

	High Melatonin Concentrations in Third Ventricular Cerebrospinal Fluid Are Not due to Galen Vein Blood Recirculating ...
		and the infundibular recess of the third ventricle for the antero-posterior
		(n = 6) concentrations of melatonin detectable in the CSF of the third ventricle (squares) and in the jugular plasma (circles).
		Skinner DC, Malpaux B, Delaleu B, Caraty A 1995 Luteinizing hormone (LH)-releasing hormone in third ventricular cerebrospinal fluid of the ewe: correlation with LH pulses and the LH surge.
	endo.endojournals.org /cgi/content/full/140/10/4399 (4862 words)

	Gonadotropin-Releasing Hormone Secretion into Third-Ventricle Cerebrospinal Fluid of Cattle: Correspondence with the ...
		[13] and for cannulating the ventricle of young heifers [14].
		Effects of third ventricular infusion of NPY on tonic secretion characteristics (mean ;pm SEM) of plasma LH and CSF GnRH in 3 ovariectomized, estradiol-implanted cows treated with 0 (saline), 50, and 500 ;gmg NPY in a Latin square arrangement.
		Skinner DC, Malpaux B, Delaleu B, Caraty A. Luteinizing hormone-releasing hormone in third ventricular cerebrospinal fluid of the ewe: correlation with LH pulses and the LH surge.
	www.biolreprod.org /cgi/content/full/59/3/676 (5286 words)

	Third ventricle enlargement and developmental delay in first-episode psychosis: preliminary findings -- FANNON et al. ...
		ventricle volumes and the presence of developmental delay.
		of the third ventricle (Cannon et al, 1988).
		on the third ventricle are prominent relays in the limbic pathways.
	bjp.rcpsych.org /cgi/content/full/177/4/354 (2944 words)

	MR Ventriculography for the Study of CSF Flow -- Joseph et al. 24 (3): 373 -- American Journal of Neuroradiology
		between the third ventricle and the cyst, with a thin streak
		the third ventricle in one patient and absence of flow in another.
		Stereotactic third ventriculostomy: assessment of patency with MR imaging.
	www.ajnr.org /cgi/content/full/24/3/373 (4182 words)

	third ventricle
		Neurosecretory granules: evidence from an aging process within the neurohypophysis.
		The dorso-lateral recess of the hypothalamic ventricle in neonatal rats.
		Immunocytochemical localization of catalase in the central nervous system of the rat.
	www.arclab.org /node_pages/211.html (307 words)

	6699.html (Site not responding. Last check: 2007-10-22)
		A well defined oval mass is seen in the anterior 3rd ventricle, appearing of lower density than brain on the T1-weighted images and showing high signal on the proton density and T2-weighted images.
		Third ventricular colloid cysts are gelatinous-filled cystic masses that commonly occur in the anterior third ventricle adjacent to the foramen of Monro.
		They are commonly bright on T1-weighted images and of lower signal on T2-weighted images, but the reverse pattern is not uncommon, as seen in this case.
	www.mritutor.org /mriteach/6699.html (104 words)

	[No title]
		The answer is D. The floor of the fourth ventricle is composed from the hypoglossal and vagal trigones as well as the vestibular area.
		The roof of the fourth ventricle in the anterior half of the pons is the
		The answer is B. The superior medullary velum forms the roof of the fourth ventricle in the anterior half of the pons.
	www.kumc.edu /research/medicine/pharmacology/CAI/webCAI/anatomy/umo3.wbc (3358 words)

	eMedicine - Brain, Colloid Cyst : Article by Andrew L Wagner, MD (Site not responding. Last check: 2007-10-22)
		To reach the remainder of the subarachnoid space, the CSF must exit the lateral ventricles through the foramina of Monroe, which are small openings leading to the third ventricles.
		Pollock BE, Schreiner SA, Huston J 3rd: A theory on the natural history of colloid cysts of the third ventricle.
		Scotti G, Scialfa G, Colombo N, Landoni L: MR in the diagnosis of colloid cysts of the third ventricle.
	www.emedicine.com /radio/topic96.htm (2040 words)

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