[Neurinoma of the oculomotor nerve: case report]

A case of solitary neurinoma of oculomotor nerve is reported. A 40-year-old female had a sudden headache with nausea and vomiting in January, 1978. She complained of diplopia and right ptosis two months later and visited a neurosurgical clinic, but radiological examination was told to be normal. Headache and right ptosis diminished, but diplopia continued. She was admitted to our clinic on Aug. 30, 1984, complaining of diplopia and right ptosis which were noticed only when she was tired. On admission, she had no neurological deficits except for right oculomotor nerve palsy. There was no cutaneous manifestation of von Recklinghausen's disease. Plain skull radiogram and angiogram showed normal study. CT scan showed a solitaly enhancing mass in the right prepontine region. On Sept. 22, 1984, a right frontotemporal craniotomy was performed, and the tumor was totally removed by pterional approach. The tumor was located beside the right internal carotid artery and the oculomotor nerve was incorporated in the tumor. The histological diagnosis was Antoni B type neurinoma. The clinical features of fourteen reported cases of neurinoma of the oculomotor nerve in the literature were reviewed.