It's normal for one breast to differ slightly from the other in size, shape, or projection. However, if the difference is significant, there are several ways to correct this asymmetry. For example, the larger breast may be reduced through a mammaplasty (MAM-uh-plass-tee), or breast reduction. You can also enlarge the smaller breast with a saline implant. A drooping breast can be lifted in a procedure called a mastopexy (MASS-tuh-pecks-ee). A combination of these techniques may be used, depending on the results you wish to achieve. When breast asymmetry exists due to a mastectomy (mass-TEK-tuh-mee), or removal of breast tissue, the missing breast can sometimes be reconstructed from your own tissue, taken from the stomach, back, or buttocks. An artificial implant may also be used, in a procedure similar to breast enlargement. If the reconstructed breast will be different in appearance from the other breast, you may choose to have the existing breast altered to match. Most cosmetic surgery of the breasts is considered elective, meaning insurance companies typically won't cover the cost. However, the law now requires most insurance plans to pay for reconstruction of a breast following a mastectomy. Adjustments to the existing breast may or may not be covered.