Epidermoid neoplasm of the fourth ventricle. Report of two cases
Main Article Content
Keywords
Brain neoplasms, Epidermal cyst, Fourth ventricle
Abstract
Background: epidermoid neoplasm (EN) account for 1 % of whole intracranial neoplasms. Usually, it finds at the cerebello-pontine angle and the location in the fourth ventricle (FV) is rare. The aim was to report two cases of EN of the FV.
Clinical cases: case 1: a female 22 year old presented an intense headache with a history of 3 months. At the hospital entry, symptoms and signs of high intracranial pressure were found. Tomography images showed hydrocephalus with high pressure in the FV. She was treated with a shunt from ventricular to peritoneal cavity. After that an encapsulated neoplasm was drawn. It had a pearled aspect. The histology resulted an EN originated in the FV. Case 2: a female 44 year old with a history of five years with dizziness, three years before admission she presented intermittent diplopia and disfagia. At the hospital admission the patient presented paresis of the 6th and 7th cranial nerve. The tomography and the magnetic resonance studies showed a mass in the FV. The neoplasm was extirpated.
Conclusions: the EN of the FV is infrequent benign lesion. The magnetic resonance is the standard diagnostic study, but it could confuse with neurocisticercosis. The extirpation and the treatment of the hydrocephalus are indicated.
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