Abstract
The patient was a 62-year-old female who was diagnosed with peripheral artery disease and underwent distal bypass operation of the lower extremities with saphenous vein graft. After the operation, the pulsation of dorsalis pedis artery was well and necrotic digitus pedis was cleared. Four months later, graft flow pattern worsened and graft flow velocity decreased on vascular ultrasound. Graft stenosis was confirmed by angiography of the lower extremities. PTA was performed and graft flow velocity recovered to the same level at early postoperative period. A regular check by vascular ultrasound after lower extremity revascularization was useful to prevent graft obstruction.