Breast reconstruction is a surgical procedure that restores shape to your breast after mastectomy; surgery that removes your breast tissue to treat or prevent breast cancer. Breast reconstruction with flap surgery is a type of breast reconstruction that involves taking a section of tissue from one area of your body and relocating it to create a new breast mound.Breast reconstruction with flap surgery is a complex procedure performed by a plastic surgeon. Much of the breast reconstruction using your body's own tissue can be accomplished at the time of your mastectomy. However, you'll need a second operation to achieve a correctly positioned, natural-appearing breast or to perform nipple reconstruction.