Acute subdural haematoma successfully treated by percutaneous subdural tapping in an elderly patient.

An elderly patient suffering acute subdural haematoma associated with cerebral contusion was treated by percutaneous subdural tapping while preparing for craniotomy. Most of the subdural haematoma, though of high density on computed tomography scanning, proved to be semiliquid. Drainage of the haematoma yielded resolution of the mass effect, and was followed by a rapid improvement of consciousness. This observation suggests the significance of trial subdural tapping for the treatment of acute traumatic subdural haematoma prior to craniotomy.