Intracranial epidermoid cyst


This case illustrates typical MRI features of an intracranial epidermoid cyst, with dirty signal/partial suppression of the T2 signal on FLAIR and diffusion restriction. Epidermoids are the third most common cerebellopontine angle mass, after acoustic schwannomas and meningiomas. The lesion causes important mass effect over the posterior fossa structures and consequent obstructive hydrocephalus