Answer and Discussion of Quiz Set: N-025

4.    Which of the following is not true about venous infarction due to thrombosis in the vein?

A.  Thrombosis of the of the cavernous sinus, sphenoid sinus, and lateral sinus is a common mechanism

B.  It affects only elderly patients

C.  It is common in cerebral amyloid angiopathy

D.  Thrombolytic therapy will not lead to expansion of the hemorrhage

E.  Pregnancy and use of oral conctraceptives are known risk factors

Answer and Discussion: The answer is (B). Venous thrombosis of deep vein leading to thrombosis can occur in all ages. In infants and children, dehydration and nephrotic syndromes are two of the more common mechanisms. Any other mechanisms of hypercoagulation pose a risk for the development of thrombotic infarction of the brain. In contrast to arterial hermorrhage, the source of the hemorrhage is low pressure. Thrombolytic therapy will not lead to expansion of the hemorrhage. Cerebral amyloid angiopathy is a vasculopathy of the arteries. It does not increase the risk of thrombosis in the vein.