Malignant fibrous histiocytoma masquerading as a pseudoaneurysm of the profunda femoris.

Abstract

We describe a patient with an aggressive soft tissue sarcoma masquerading as a profunda femoris pseudoaneurysm. A 73-year-old patient presented with a pulsatile swelling in her right groin. Femoral angiography demonstrated what appeared to be a pseudoaneurysm of the right profunda femoris artery and she underwent an open surgical repair. The patient represented 2 months later with an enlarging non-pulsatile, non-tender mass at the site of the wound. Open biopsy determined the diagnosis as malignant fibrous histiocytoma (MFH). An en bloc resection of the mass with reconstruction of the femoral artery and vein using PTFE grafts was performed.