Malignant Degeneration of Intracranial Epidermoid Cyst to Squamous Cell Carcinoma: A Case Report and Literature Review

Intracranial epidermoid cysts represent a group of relatively common, benign, indolent tumors most frequently encountered at the cerebellopontine angle. Presentation is usually secondary to compressive neurologic symptoms. Treatment is surgical debulking and generally is curative. As with other epidermoid cysts throughout the body, the risk of degeneration into squamous cell carcinoma is a rare complication that is typically fatal within the CNS.