[Epidermoid cyst of the cerebellopontine angle. Report of a case].

Epidermal cysts of the cerebello-pontine angle (CPA) are lesions arising from epidermal remainders having an expansive and slow growth sitting on the PCA space or on the temporal bone. Are diagnosed approximately in the fourth life's decade by its deficient or irritant symptoms related to VIIth and VIIIth cranial nerves. It is important the nuclear magnetic resonance exam because the specific radiologic characteristics that distinguish these cysts from other conditions of CPA as neuromata or meningiomata.