Abdominoplasty generally takes up to four hours. The operation involves the use of a general anesthesia and a hospital stay of two to four days. An ellipse of skin between the pubic bone and the navel is cut out and the skin is lifted. Once the excess skin is removed, the skin above the navel is pulled down and stretched toward the skin below the pubic bone and is stitched together. Excess fat may be removed and underlying muscles tightened at the same time. In some cases the skin is pulled down over the original navel and a new hole is made for it to come through. After surgery, bandages and drainage tubes are put in place to support proper healing.