title: Arachnoid cyst of the cavum velum interpositum in a septuagenarian: radiological features and differential diagnosis.
abstract: 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.
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India - rajesh387@gmail.com.
authors.forename: S
authors.initials: S
authors.lastname: Rajesh
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India.
authors.forename: Shorav
authors.initials: S
authors.lastname: Bhatnagar
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India.
authors.forename: Udit
authors.initials: U
authors.lastname: Chauhan
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India.
authors.forename: Shailesh
authors.initials: S
authors.lastname: Gupta
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India.
authors.forename: Nitesh
authors.initials: N
authors.lastname: Agarwal
authors.affiliation: Department of Radiology, Institute of Liver and Biliary Sciences; New Delhi, Delhi, India.
authors.forename: Vivek
authors.initials: V
authors.lastname: Kasana
mesh_terms: D000367:Age Factors; D000368:Aged; D016080:Arachnoid Cysts / Q000134:cerebrospinal fluid / Q000473:pathology*; D002555:Cerebrospinal Fluid; D003937:Diagnosis, Differential; D006801:Humans; D020547:Lateral Ventricles / Q000002:abnormalities* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male
keywords: arachnoid cyst; cavum velum interpositum; cavum vergae
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