Review Of Cavernous Sinus Thrombosis References. Web cavernous sinus thrombosis is a very rare, typically septic thrombosis of the cavernous sinus, usually caused by nasal furuncles or bacterial sinusitis. Web cavernous sinus thrombosis is a blood clot in the cavernous sinuses.

It’s fatal in about 1 in 3 cases. Web cavernous sinus thrombosis is a rare blood clot that can form in response to an infection in your face or head. Cavernous sinus thrombosis (cst) is the formation of thrombus (clot) within the cavernous sinus, which can either be septic or aseptic.