Ventriculus terminalis of the conus medullaris: MR imaging in four patients with congenital dilatation

MR findings in four patients with MR evidence of congenital cystic dilatation of the ventriculus terminalis were reviewed retrospectively. The ventriculus terminalis is a small cavity of the conus medullaris that forms during embryonic development as result of canalization and retrogressive differen...

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Published inAmerican journal of neuroradiology : AJNR Vol. 12; no. 4; pp. 733 - 737
Main Authors Sigal, R, Denys, A, Halimi, P, Shapeero, L, Doyon, D, Boudghene, F
Format Journal Article
LanguageEnglish
Published Oak Brook, IL Am Soc Neuroradiology 01.07.1991
American Society of Neuroradiology
Subjects
Adult
Biological and medical sciences
Cysts - diagnosis
Cysts - surgery
Female
Humans
Magnetic Resonance Imaging
Malformations of the nervous system
Medical sciences
Middle Aged
Neurology
Retrospective Studies
Spinal Cord - pathology
Spinal Cord Diseases - diagnosis
Spinal Cord Diseases - surgery
Human
Spinal cord
Nervous system diseases
Conus medullaris
Dilatation
Malformation
Cyst
Exploration
Nuclear magnetic resonance imaging
Spinal cord disease
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Summary:MR findings in four patients with MR evidence of congenital cystic dilatation of the ventriculus terminalis were reviewed retrospectively. The ventriculus terminalis is a small cavity of the conus medullaris that forms during embryonic development as result of canalization and retrogressive differentiation. The dilated ventriculus terminalis appears on MR images as a small ovoid cavity with regular margination; intralesional fluid resembles cerebrospinal fluid on all MR sequences. After injection of contrast material, MR imaging shows no enhancement of the cyst or its wall, and thus differentiates congenital dilatation of the ventriculus terminalis from cystic tumors, which occur more frequently in this region.
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ISSN:0195-6108
1936-959X