Cystic degeneration of the popliteal artery.
D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D003560:Cysts / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000000981:diagnostic imaging; D011859:Radiography