Traumatic dural venous sinus thrombosis with intrasinus gas
This case emphasizes the importance of looking for signs of dural venous sinus thrombosis on trauma CT brain. Skull fracture crossing a suture (or suture diastasis) is the major risk factor for thombosis. It has also been proposed that intra-sinus gas (likely created by traumatic vacuum phenomenon) in the setting of fracture further increases the risk of thrombosis. Hyperdensity of the thrombosed segment on non-contrast CT is also a common and important feature.