[Deep sylvian meningioma: a case report of a child].

A case of deep sylvian meningioma without dural attachment in a 12-year-old boy was reported. He had been suffering from severe headache for a month. Neurological examination was normal. CT scan and MR images showed a well-enhanced 7 cm mass lesion with small cysts, located in the left sylvian fissure. Peritumoral edema was slight and the midline structures were minimally shifted in spite of its large size. A fronto-temporal craniotomy was made and the tumor was grossly totally removed. The tumor had no dural attachment and existed in the left sylvian fissure, involving the middle cerebral artery and its branches. The histological diagnosis was transitional meningioma without malignancy. The postoperative course was uneventful except for transient mild left oculomotor palsy for several days. He is doing well now one year after the surgery and follow-up MR images showed no recurrence. Intracranial meningioma is rare in children. According to the literature, meningioma in children is slightly more frequent in males. There is a higher incidence of lack of dural attachment and cystic tumors than in adults. Deep sylvian meningioma without dural attachment is also very rare. Including our case, 13 cases of deep sylvian meningioma were reported in the literature. Four of them were under 20 years old. We report this case in detail with other cases reported previously.