Epidermoid cysts of the velum interpositum

Bahuleyan, Biji; Daniel, Roy Thomas; Chacko, Geeta; Chacko, Ari G

doi:10.1016/j.jocn.2007.06.015

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…6). There will be ventral displacement of the internal cerebral veins in contrast to the third ventricle lesions, where the internal cerebral veins are displaced dorsally 11 …”

Section: Cistern Of Velum Interpositum Epidermoidmentioning

confidence: 96%

Spectrum of intracranial and spinal epidermoids including unusual locations and imaging findings: A pictorial review

et al. 2022

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Intracranial and spinal epidermoids are benign slow-growing congenital lesions. They are predominantly intradural, extra-axial in location, with intraaxial locations (intra-parenchymal and spinal intramedullary) being rare. The most common locations of intradural epidermoids are cerebellopontine angle cistern followed by supra-and para-sellar regions, and fourth ventricle. Less common locations include inter-hemispheric fissure, sylvian fissure, lateral ventricle, intracerebral, velum interpositum cistern, superior cerebellar cistern and pineal gland. They can also be extradural, usually arising in the diploic space of the calvaria, though they are less common. Magnetic resonance imaging is the primary modality for diagnosis and knowing the extent of the lesion. In this pictorial review, we intend to illustrate their classical and unusual locations, atypical imaging findings including calcifications, rare complications like haemorrhage or spontaneous rupture.

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“…6). There will be ventral displacement of the internal cerebral veins in contrast to the third ventricle lesions, where the internal cerebral veins are displaced dorsally 11 …”

Section: Cistern Of Velum Interpositum Epidermoidmentioning

confidence: 96%

Spectrum of intracranial and spinal epidermoids including unusual locations and imaging findings: A pictorial review

et al. 2022

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“…Lesions reported to arise within the velum interpositum which includes: Arachnoid cyst, pilocytic astrocytoma, meningioma, atypical teratoid tumors, epidermoid cyst, colloid cyst, and arteriovenous malformations. [2][3][4][5][6][7][8] Moreover, the velum interpositum and structures lying within and over it undergo morbid anatomical changes with hydrocephalus that have not been mentioned in the literature. The aim of this article is to describe the diverse endoscopic anatomical findings for this surgically important region.…”

mentioning

confidence: 99%

Endoscopic anatomy of the velum interpositum: A sequential descriptive anatomical study

Zohdi

Elkheshin

2012

Asian J Neurosurg

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Background:The velum interpositum and structures lying within and over it undergo morbid anatomical changes with hydrocephalus that have not been mentioned in the literature.Objectives:The aim of this article is to describe the diverse endoscopic anatomical findings for this surgically important region.Materials and Methods:One thousand five hundred and twenty cranial endoscopic procedures performed from September 1993 till March 2011 have been retrospectively reviewed. Anatomical `situm and covering layers have been reported in 40 cases.Results:The changes of the velum interpositum have four patterns. These are 1-Distraction mounting to disruption of layers, 2-Reverse in the normal curvature, 3-Reverse of the triangular shape with change in size, and 4-Cystic dilatation causing hydrocephalus.Conclusion:The velum interpositum and roof of the third ventricle are sites of changes associated with hydrocephalus that show specific patterns described in a sequential anatomical study.

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The basal subarachnoid cisterns

Couldwell

Tubbs

2023

Cerebrospinal Fluid and Subarachnoid Space

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Epidermoid cysts of the velum interpositum

Cited by 5 publications

References 9 publications

Spectrum of intracranial and spinal epidermoids including unusual locations and imaging findings: A pictorial review

Spectrum of intracranial and spinal epidermoids including unusual locations and imaging findings: A pictorial review

Endoscopic anatomy of the velum interpositum: A sequential descriptive anatomical study

The basal subarachnoid cisterns

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