Development of Angiosarcoma in a Saphenous Vein Graft after Femoral to Above-Knee Popliteal Artery Bypass.

Angiosarcoma is an exceedingly rare and aggressive neoplasm. Owing to early metastasis even in low-grade tumors, it is associated with poor survival. We report a late development of an angiosarcoma in a saphenous vein graft after a femoral artery to above-knee popliteal artery bypass performed for disabling claudication. Chronic inflammation, lymphatic disruption, and thrombosis of the graft may have contributed to the malignant transformation, similar to cases described as occurring after arteriovenous fistulae creation. This case illustrates that angiosarcoma may be a rare, late complication of autogenous vascular bypass.