A common femoral vein aneurysm diagnostic challenge: a case report and review of the literature.

Common femoral vein aneurysms are rare and they are often misdiagnosed as soft tissue masses or as hernias. In this case report, we review literature and describe a patient who presented with left inguinal mass associated with ipsilateral limb swelling. He was initially misdiagnosed as cystic adventitial disease of common femoral vein. Later, he underwent surgical exploration and found out to have common femoral vein aneurysm which was treated by aneurysmectomy and lateral venorrhaphy.