WHAT IS DEEP FLAP ?
DIEP stands for the deep inferior epigastric perforator artery, which runs through the abdomen.

In a DIEP flap, fat, skin, and blood veins are cut from the wall of the lower belly and moved up to your chest to rebuild your breast. (In a properly performed DIEP, no muscle is cut or removed; if you’re having DIEP flap, make sure this will be the case.) Your surgeon carefully reattaches the blood veins of the flap to blood vessels in your chest using microsurgery. Because no muscle is used, most women recover more quickly and have a lower risk of losing abdominal muscle strength with a DIEP flap compared to any of the TRAM flap procedures.

This is applied to the breast area.