Subdural hygroma after head injury

This is a review of 26 cases of traumatic subdural hygroma (TSH). Special attention was paid to frequency of occurrence, angiographic features, and the relationship between subdural fluid appearance and clinical course, since these have been seldom reported previously. TSH was infrequent among the intracranial mass lesions following head injury. Cerebral angiography was useful in diagnosis. There were occasional postoperative difficulties when the subdural fluid was xanthochromic or blood-tinged.