Ruptured giant dermoid cyst of the cavernous sinus.

We report a 27-year-old male with a giant dermoid cyst of the cavernous sinus that extended into the posterior fossa and ruptured, causing meningitis and hydrocephalus. We also discuss the radiological features, surgical challenges and management difficulties of such a cyst. A giant dermoid cyst of the cavernous sinus that extends into the posterior fossa and subsequently ruptures has not been previously reported. Copyright 2009. Published by Elsevier Ltd.