Are vascular conditions a common complication of cancer?

Yes: There is an increased incidence of dvt/ pulm embolism in pts with cancer. Arterial disease is far less common , but may me subject to vascular occlusion from tumor emboli.

Venous thrombosis: Hypercoagulability is associated with cancer and even the chemo agents this is more of an issue of venous thrombosis rarer cases of arterial thrombosis can occur.