what is a cortical vein
Cortical vein thrombosis, also known as superficial cerebral vein thrombosis, is a subset of cerebral venous thrombosis involving the superficial cerebral veins besides the dural sinus, often coexisting with deep cerebral vein thrombosis or dural venous sinus thrombosis.he cortical cerebral veins considered for this pathology are: 1  superficial middle cerebral vein. 2  vein of Labbe (inferior anastomotic vein). 3  vein of Trolard (superior anastomotic vein).