A DIEP flap is a type of breast reconstruction in which blood vessels called deep inferior epigastric perforators (DIEP), as well as the skin and fat connected to them, are removed from the lower abdomen and transferred to the chest to reconstruct a breast after a mastectomy.
This procedure requires an incision into the abdominal (rectus) muscle, as the blood vessels, or perforators, required to keep the tissue alive lie just beneath or within this muscle. Therefore, a small incision is made in the abdominal muscle in order to access the vessels.
After the skin, tissues and perforators (collectively known as the "flap") have been separated, the flap is transplanted and connected to the patient's chest. Dr. Collis then shapes the flap to create the new breast.