The superficial inferior epigastric artery (SIEA) flap is similar to a DIEP flap in that it is a muscle-sparing perforator flap option for reconstruction. The SIEA flap uses a different, more superficial blood supply than the DIEP flap. However, only about 20 percent of women have this superficial system, and the blood vessels must be of adequate size and character to perform the microsurgery successfully. All of the blood supply is carefully examined and evaluated in the operating room, and the most appropriate vessels are chosen at that time. Learn more about SIEA Flap.