Utility of foot venography as part of the routine lower-extremity venogram: a prospective study.

Two-hundred foot venograms were performed in patients suspected of deep vein thrombosis (DVT). Eighty studies were positive for DVT in the calf, popliteal, superficial femoral, or common femoral veins. Of these, 16 (20%) had an associated venous thrombosis in the foot. One hundred and ten studies were negative. Of these, none had a positive foot venogram. It is therefore our feeling that an additional study of the foot need not be performed unless there are symptoms specifically referable to this area.