Breast reconstruction is surgery to rebuild a breast's shape after a mastectomy . It cannot give a woman back her breast - a reconstructed breast does not have natural sensations. However, the surgery offers a result that looks like a breast. Most women who had breast reconstruction are glad they did. In breast reconstruction, a surgeon forms a breast mound by using an implant or tissues from the belly, back or buttocks. Implants are silicone sacs filled with salt water or silicone gel. The type of reconstruction you get depends on your body type, age and cancer treatment. Breast reconstruction takes more than one surgery. Extra steps may include: Adding a nipple Changing the shape or size of the reconstructed breast Operating on the opposite breast for a better match