Spontaneous CSF rhinorrhoea due to temporosphenoidal encephalocele.

A 54-year-old woman was referred with spontaneous cerebrospinal fluid (CSF) rhinorrhoea. CT cisternography revealed a defect in the lateral wall of the left sphenoid sinus, with an anteromedial temperosphenoidal encephalocele associated with contrast leakage into the sinus. Subsequent monitoring showed raised intracranial pressure. Transcranial intradural repair of the encephalocele followed by lumboperitoneal shunt for the high pressure abolished the leakage of cerebrospinal fluid.