Which of the following is not a cause of spontaneous CSF leak?: (A) Raised ICP, (B) Pseudotumor cerebri, (C) Empty sella syndrome, (D) Encephalocele
Answer is A. Pseudotumor cerebri, Empty sella syndrome and Encephalocele are causes of spontaneous CSF leak leading to intracranial hypotension. Hence raised ICP is contradictory in spontaneous CSF leak. Ref: Progress in Clinical Neurosciences, Volume 24 By Deepu Banerji , Pages 219-224; Chronic Daily Headache for Clinicians By Peter J. Goadsby, Stephen D. Silberstein, David Dodick, Pages 212-13.