Arachnoid Cyst of the Cavum Velum Interpositum in a Septuagenarian: Radiological Features and Differential Diagnosis

The cavum velum interpositum (CVI) is a thin, triangular-shaped cerebrospinal fluid (CSF)-filled space between the lateral ventricles that lies below the fornices and above the third ventricle. It is a normal variant seen in premature and newborn infants and usually disappears with brain maturation....

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Bibliographic Details
Published in:The neuroradiology journal 2014-04, Vol.27 (2), p.154-157
Main Authors: Rajesh, S, Bhatnagar, Shorav, Chauhan, Udit, Gupta, Shailesh, Agarwal, Nitesh, Kasana, Vivek
Format: Article
Language:English
Subjects:
Age Factors
Aged
Arachnoid Cysts - cerebrospinal fluid
Arachnoid Cysts - pathology
Cerebrospinal Fluid
Diagnosis, Differential
Humans
Lateral Ventricles - abnormalities
Lateral Ventricles - pathology
Magnetic Resonance Imaging
Male
Original
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Description
Summary:The cavum velum interpositum (CVI) is a thin, triangular-shaped cerebrospinal fluid (CSF)-filled space between the lateral ventricles that lies below the fornices and above the third ventricle. It is a normal variant seen in premature and newborn infants and usually disappears with brain maturation. CVI is rarely seen in adults as a persistent primitive structure. Although moderate cystic dilatation of the CVI may sometimes be observed, a true large cyst is extremely rare with only a handful of reported cases, mostly in children and adolescents. We describe the case of CVI arachnoid cyst diagnosed on imaging in a septuagenarian with the complaint of occasional headaches.
ISSN:1971-4009
2385-1996
DOI:10.15274/NRJ-2014-10026