Cavum veli interpositi

Case contributed by Matthew Lukies
Diagnosis certain

Presentation

First episode psychosis. CT brain to exclude organic causes.

Patient Data

Age: 25
Gender: Male
ct
  • No potential organic cause of psychosis identified
  • Incidental finding of cavum veli interpositi

Case Discussion

Cavum veli interpositi is an anatomical variant typically found incidentally and more commonly in children. It is a cisternal CSF-containing space formed in the velum interpositum, located between the lateral ventricles, inferior to the fornices and superior to the third ventricle. While cavum septum pellucidum has been associated with neuropsychiatric disorders, cavum veli interpositi has not .1,2

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