抄録
A case of spontaneous intracranial extradural hematoma is presented. A 11-year-old girl was admitted to a local hospital, because of fever, headache, and vomiting. At that time the patient was drowsy and incontinent of urine. Computerized tomography showed a large left frontal hematoma and she was transferred. Admission examination revealed a somnolent but well oriented girl with a temperature of 37.4°C. There was bilateral papilledema with retinal bleeding. Routine laboratory studies revealed moderate leucocytosis and an increased erythrocyte sedimentation rate. Angiography revealed a left frontal, large hypovascular mass with a pseudoaneurysm of the middle meningeal artery. Craniotomy disclosed an extradural fresh clot and arterial bleeding from the middle meningeal artery in the welldeveloped granulation tissue. Histologically, this granulation tissue contained numerous dilated vessels and focal hemorrhages.
