NEURINOMA DEL ACÚSTICO

Abstract

Background: Schawnn cells of the eighth cranial nerve may be a seat of origin of a benign tumor called Acoustic Neurinoma or vestibular Schwannoma. Its presence in the cochlear portion is rare, but not in its upper and lower vestibular portions. Its pre­sence is occasional, it can be in family cases or secondary to a neurofibromatosis type 2, in which it occurs bilaterally.

The case: Male patient, 51 years of age, with a history of 2 mon­ths before admission sudden onset headache, oppressive, inter­mittent type that gives way to common analgesics, for 2 weeks postprandial vomiting and asthenia, bitonal voice and weight­loss. On physical examination, a patient with a watchful, lucid, collaborative patient, fascio left crural brachium hemiparesis (FM: 4/5), dysphonia, dysmetry, adiadocokinesia from right to left, PISR. After performing the imaging studies, he was diag­nosed: Expansive process in the left pontocerebellar angle; as a treatment of choice, whenever feasible, a surgery consisting of tumor exceresis.

Conclusion: The acoustic neurinoma is usually difficult to diag­nose in the initial stages because the signs and symptoms can be subtle and manifest gradually over time; MRI is the preferred diagnostic imaging test to confirm the presence of the expansive process.