A, MR image of soft-tissue sarcoma in 85-year-old man shows tumor adjacent to distal femur and femoral vessels. B, Resected specimen. C, Tumor cavity with exposed distal femur and femoral vessels (arrow). D, Brachytherapy catheters woven through polyglactin 910 (Vicryl) mesh to help maintain proper spacing. Catheters placed along vessels and bone (where margins were close) exiting through separate stab wounds. Wound was closed over catheters.