Intraventricular meningiomas: a clinicopathological study and review of the literature

2006 ◽  
Vol 20 (3) ◽  
pp. 1-6 ◽  
Author(s):  
Harjinder S. Bhatoe ◽  
Prakash Singh ◽  
Vibha Dutta
Keyword(s):  
Fourth Ventricle ◽  
Third Ventricle ◽  
Neurofibromatosis Type ◽  
Histopathological Features ◽  
The Third ◽  
Lateral Ventricles ◽  
Suboccipital Craniectomy ◽  
Eloquent Cortex ◽  
Slow Growing

Object Intraventricular meningiomas are rare tumors. The origin of these tumors can be traced to embryological invagination of arachnoid cells into the choroid plexus. The authors analyzed data that they had collected to study the clinicopathological aspects and review the origin, presentation, imaging, and management of these tumors. Methods In this retrospective analysis, the authors describe the cases of 12 patients who had received a diagnosis of intraventricular meningioma and underwent surgery for the tumors. Nine of these patients were men and three were women. Features of neurofibromatosis Type 2 were present in two of the women. Nine of the tumors were located in the lateral ventricles, one was in the third ventricle, and two were in the fourth ventricle. Raised intracranial pressure (ICP) was the universal presentation in all the patients, and the preoperative diagnoses were confirmed on neuroimaging studies. Excision was performed using the parietooccipital (trigonal) approach for lateral ventricle tumors, the transcortical–transventricular route for the third ventricle tumor, and suboccipital craniectomy for fourth ventricle tumors. Postoperatively, one patient died and the others experienced resolution of their symptoms. Histopathological features of these tumors were similar to those seen in meningiomas in other locations. Conclusions Intraventricular meningiomas are slow-growing tumors that become large prior to detection. Although they are commonly seen in the lateral ventricles, they occur in the third and fourth ventricles as well. Presentation is in the form of raised ICP with no localizing features; therefore the diagnosis is based on imaging studies. Hydrocephalus occurs due to obstruction of cerebrospinal fluid pathways. Excision requires planning to avoid eloquent cortex incision. The histopathological features are varied, although most of the tumors in the study were angiomatous meningiomas. These tumors are no different histologically from tumors that are dural in origin. No recurrence has been reported.

Critical surgical anatomy of the ventricular system

2010 ◽  
pp. 674-680
Author(s):  
George Samandouras
Keyword(s):  
Fourth Ventricle ◽  
Third Ventricle ◽  
Surgical Anatomy ◽  
Ventricular System ◽  
The Third ◽  
Lateral Ventricles ◽  
System P

Chapter 12.1 covers critical surgical anatomy of the ventricular system, including brief surgical embryology, brief clinical histology, the lateral ventricles, the third ventricle, the fourth ventricle, and major cisterns.

scholarly journals III. Contributions to the anatomy of the central nervous system in vertebrated animals. Part I.—Ichthyopsida. Section I.—Pisces. Subsection III.—Dipnoi. On the brain of the Ceratodus forsteri

1888 ◽  
Vol 43 (258-265) ◽  
pp. 420-423
Keyword(s):  
Fourth Ventricle ◽  
Third Ventricle ◽  
Pia Mater ◽  
The Third ◽  
Lateral Ventricles ◽  
Large Size ◽  
General Arrangement ◽  
Tela Choroidea ◽  
The Central Nervous System ◽  
The Brain

The brain of Ceratodus has the following general arrangement:—The membrane which represents the pia mater is of great thickness and toughness; there are two regions where a tela choroidea is developed: one where it covers in the fourth ventricle, and the other where it penetrates through the third ventricle and separates the lateral ventricles from each other. The ventricles are all of large size, and the walls of the lateral ventricles are not completed by nervous tissue. The thalamence-phalon and the mesencephalon are narrow, and the medulla oblongata is wide.

Neuroendoscopic Aspiration of Blood Clots in the Cerebral Aqueduct and Third Ventricle During Posterior Fossa Surgery in the Prone Position

2018 ◽  
Vol 17 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Alberto Feletti ◽  
Riccardo Stanzani ◽  
Matteo Alicandri-Ciufelli ◽  
Giuliano Giliberto ◽  
Matteo Martinoni ◽  
...  
Keyword(s):  
Prone Position ◽  
Posterior Fossa ◽  
Fourth Ventricle ◽  
Blood Clot ◽  
Third Ventricle ◽  
Cerebral Aqueduct ◽  
Posterior Fossa Surgery ◽  
The Third ◽  
Blood Clots ◽  
Surgical Field

AbstractBACKGROUNDDuring surgery in the posterior fossa in the prone position, blood can sometimes fill the surgical field, due both to the less efficient venous drainage compared to the sitting position and the horizontally positioned surgical field itself. In some cases, blood clots can wedge into the cerebral aqueduct and the third ventricle, and potentially cause acute hydrocephalus during the postoperative course.OBJECTIVETo illustrate a technique that can be used in these cases: the use of a flexible scope introduced through the opened roof of the fourth ventricle with a freehand technique allows the navigation of the fourth ventricle, the cerebral aqueduct, and the third ventricle in order to explore the cerebrospinal fluid pathways and eventually aspirate blood clots and surgical debris.METHODSWe report on one patient affected by an ependymoma of the fourth ventricle, for whom we used a flexible neuroendoscope to explore and clear blood clots from the cerebral aqueduct and the third ventricle after the resection of the tumor in the prone position. Blood is aspirated with a syringe using the working channel of the scope as a sucker.RESULTSA large blood clot that was lying on the roof of the third ventricle was aspirated, setting the ventricle completely free. Other clots were aspirated from the right foramen of Monro and from the optic recess.CONCLUSIONWe describe this novel technique, which represents a safe and efficient way to clear the surgical field at the end of posterior fossa surgery in the prone position. The unusual endoscopic visual perspective and instrument maneuvers are easily handled with proper neuroendoscopic training.

Maternal exposure to methylmercury causes an impairment in ependymal cilia motility in the third ventricle and dilation of lateral ventricles in mice offspring

2020 ◽  
Vol 112 (16) ◽  
pp. 1253-1259
Author(s):  
Teruki Hagiwara ◽  
Hajime Hagino ◽  
Kaho Ueda ◽  
Mina Nakama ◽  
Takeshi Minami
Keyword(s):  
Third Ventricle ◽  
Maternal Exposure ◽  
The Third ◽  
Lateral Ventricles ◽  
Ependymal Cilia

Organization of the Vascular Supply to the Brain of the Toad Bufo-Marinus

1990 ◽  
Vol 38 (4) ◽  
pp. 375
Author(s):  
GK Snyder ◽  
B Gannon ◽  
RV Baudinette
Keyword(s):  
Fourth Ventricle ◽  
Third Ventricle ◽  
Vascular Supply ◽  
Bufo Marinus ◽  
Cane Toad ◽  
The Third ◽  
Toad Bufo ◽  
The Brain ◽  
Caudal Rami ◽  
Vascular Corrosion Casts

The vasculature of the brain of the cane toad, Bufo marinus, was studied by means of scanning electron microscopy of vascular corrosion casts. The sole arterial supply to the brain is from branches of the internal carotids. The forebrain is supplied by several branches from the rostra1 ramus of the carotids; the caudal ramus gives rise to a single branch which supplies the mesencephalon and cerebellum. The caudal rami fuse to form a single basilar artery which supplies the medulla. The vascular supply to the choroid plexus of the third ventricle is arterial; the vascular supply to the choroid of the fourth ventricle is entirely venous. Microvascular geometry in the toad brain is specific to the region of the brain examined, ranging from simple long capillaries with few anastomotic connections to much shorter, highly convoluted capillaries with many anastomotic connections.

scholarly journals Narcolepsy Secondary to Fourth Ventricular Subependymoma

1996 ◽  
Vol 23 (1) ◽  
pp. 59-62 ◽  
Author(s):  
T.K.F. Ma ◽  
L.C. Ang ◽  
M. Mamelak ◽  
S.J. Kish ◽  
B. Young ◽  
...  
Keyword(s):  
Fourth Ventricle ◽  
Third Ventricle ◽  
Cerebral Metastasis ◽  
Histologic Examination ◽  
Colonic Carcinoma ◽  
Anatomical Location ◽  
Pathological Changes ◽  
The Third ◽  
Anatomical Localization ◽  
History Of

ABSTRACT:Background:Secondary (symptomatic) narcolepsy is rare. We report a subependymoma of the fourth ventricle associated with narcolepsy. The patient was a 50-year-old woman with a long history of narcolepsy who died of colonic carcinoma with no cerebral metastasis. She was positive for HLA-DR2. At autopsy there was a tumour dorsal to the fourth ventricle which involved the midbrain tectum and rostral pons. Histologic examination of the tumour confirmed it to be a subependymoma.Methods:Review of the previous cases of secondary narcolepsy was made with particular reference to the anatomical location of the lesions.Results:Most of the lesions were found around the third ventricle and rostral brainstem.Conclusions:Knowing the anatomical localization of the pathological changes in secondary narcolepsy could be important in improving our understanding of its pathogenesis.

Xanthogranulomas of the Third Ventricle

Neurosurgery ◽  
1979 ◽  
Vol 4 (4) ◽  
pp. 329-333 ◽  
Author(s):  
Jeffery L. Rush ◽  
John A. Kusske ◽  
Robert W. Porter ◽  
Henry W. Pribram
Keyword(s):  
Differential Diagnosis ◽  
Intracranial Pressure ◽  
Computerized Tomography ◽  
Third Ventricle ◽  
Increased Intracranial Pressure ◽  
The Third ◽  
Lateral Ventricles ◽  
Rare Tumors ◽  
3Rd Ventricle

Abstract Two patients with xanthogranuloma of the 3rd ventricle are described. In each instance the tumor obstructed the interventricular foramina and caused dilatation of the lateral ventricles and signs of increased intracranial pressure; computerized tomography demonstrated the dense, nonenhancing lesion in the anterior 3rd ventricle. The pathogenesis of these rare tumors is discussed. These cases affirm the need to consider xanthogranuloma in the differential diagnosis of anterior 3rd ventricle tumors in adults.

scholarly journals Unusual presentation of xanthogranuloma of the choroid plexus

2010 ◽  
Vol 01 (02) ◽  
pp. 097-098 ◽  
Author(s):  
Jayaprakash Shetty ◽  
KV Devadiga ◽  
Muktha Pai ◽  
Keyword(s):  
Choroid Plexus ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Unusual Presentation ◽  
Benign Tumors ◽  
The Third ◽  
Lateral Ventricles ◽  
Exact Etiology

ABSTRACTIntracranial xanthogranulomas are rare benign tumors and occur most commonly as choroid plexus xanthogranulomas, which rarely become symptomatic. Exact etiology is still a matter of debate. We present a case of xanthogranuloma of the choroid plexus of the third ventricle, causing obstructive hydrocephalus of the lateral ventricles.

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