A Rare Cause of Headache in the Emergency Department: Intraventricular Epidermoid Cyst Rupture With Hydrocephalus.

Lateral intraventricular tumors are not frequently observed. Since these tumors grow linearly rather than exponentially, they grow gradually and thus do not cause mass effects and hydrocephalus. This study is the case report of a rare great volume left intraventricular epidermoid cyst rupture. The tumor was found to be associated with mass effect on neighboring structures and hydrocephalus.