Interhemispheric subdural empyema: angiographic diagnosis and surgical treatment.

Interhemispheric subdural empyema, secondary to frontal sinusitis in two girls is described. Headache, hemiparesis more marked in the lower extremity, fever, focal seizures, stupor and stiff neck were the principal features of the clinical course. The angiographic appearance of the lesion was the key to the preoperative diagnosis. Surgical evacuation of the purulent collection resulted in complete cure in both cases.