[Adventicial cyst of the popliteal artery].

In a 42-year-old man with intermittent calf claudication, cystic adventitial disease of the popliteal artery was demonstrated by 3D CT. Cystic mass was seen to be compressing the arterial lumen. The diagnosis of cystic adventitial was confirmed by surgery. Compared with color doppler sonography, MR Imaging, 3D CT provides additional useful anatomic information concerning disease of the popliteal artery, usually gained only with sonography or arteriography.