Tension pneumocephalus with cerebrospinal fluid rhinorrhoea in a post craniotomy patient.

Tension pneumocephalus is an uncommon but important complication of neurosurgery, often requiring urgent surgical intervention. It should be considered in any patient presenting with neurological symptoms after recent craniotomy, particularly if they also have clinical features consistent with cerebrospinal fluid (CSF) leak. We describe a patient who presented four weeks post-craniotomy with fluctuating neurological signs and CSF rhinorrhoea, who made a full recovery following repair of a frontal sinus defect and dural tear.