What is phlegmasia cerulea dolens?

Complication of proximal deep vein thrombosis (DVT) caused by near-complete thrombotic occlusion of venous drainage, leading to severe venous congestion of lower limb. The congestion may, in turn compress the arterial circulation, leading to arterial insufficiency and ischemia. Patients may present with severe pain, swelling of the leg, cyanosis, and reduced or absent femoral pulse. Learn more here.