**3.4 Preparation of the donor site**

A DIEP flap was harvested and dissected after a perforator site close to the marked area was identified. The power of the electric scalpel was lowered to measure and mark the target perforator vessel again with the center at the level of the umbilicus on the anterior sheath surface. The perforator vessel was carefully dissected and separated, and the DIEP flap was obtained. The upper and lower abdominal wall tissues were freed, the abdominal wall was reshaped, the umbilical hernia was reconstructed, and the abdominal incision was closed.
