Cerebral venous sinus thrombosis (CVST) is a rare complication of traumatic head injury. Here we present a patient with traumatic extradural haematoma successfully evacuated with good clinical recovery. However, the patient then deteriorated and died. The cause, at post mortem, was a propagating CVST, sustained at the time of head injury. CVST, although rare, is therefore an important cause of deterioration in traumatic head injury. This patient with CVST is unique in that CVST was not consid...