[Adventitial Cystic Disease of the Common Femoral Vein Mimicking Deep Venous Thrombosis: A Case Report].

Adventitial cystic disease of the vein is a rare vascular disease. Herein, we report a case of adventitial cystic disease of the common femoral vein that was initially misdiagnosed as deep venous thrombosis in a 41-year-old male who presented with leg swelling. We focused on the imaging findings and compared them with those of deep venous thrombosis.