title: Chronic subdural hematoma in the cerebellopontine angle.
abstract: A 32-year-old man had the clinical and radiological features of a mass lesion in the left cerebellopontine angle. Surgical exploration revealed a cyst containing 20 ml of altered blood. Microscopic examination of the cyst wall showed the structure of an organizing hematoma in the subdural space. The patient, on repeated questioning, denied a history of head injury.
mesh_terms: D000328:Adult; D002526:Cerebellar Diseases / Q000473:pathology / Q000601:surgery; D002530:Cerebellopontine Angle / Q000473:pathology / Q000601:surgery*; D002908:Chronic Disease; D006408:Hematoma, Subdural / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male