[A case of intracranial osteochondroma (author's transl)].

The authors reported a case of intracranial osteochondroma. A 52-year-old woman was admitted to Tokyo Women's Medical College hospital with seven years history of right visual disturbance and frontal heavy feeling. Neurological examination revealed merely right optic nerve impairment. A large mottled calcification in X-ray craniogram and a localized homogenous high density area illuminated by EMI scan in the right parasellar region were characteristic in diagnosis of osteochondroma. On April 21, 1976 a right fronto-temporal craniotomy was performed and the tumor tissue was removed partially. The pathological examination confirmed the diagnosis of osteochondroma (ossifying chodroma).