Stacked flap reconstruction is a technique by which a surgeon can use multiple flaps to reconstruct the breasts.
The stacked DIEP is the most commonly utilized approach, whereby both sides of the abdomen are used to reconstruct one breast. The entire flap of tissue (both halves of the lower abdomen) is used to reconstruct the breast. The two pieces can be stacked on top of one another or kept as a single continuous piece and folded.
By using two flaps to reconstruct a single breast, there is more volume to restore the breast. Aside from the abdomen, stacked flaps can come from the thigh or buttock. The stacked flap technique requires a very high level of surgical expertise.