Abdominoplasty is the medical term for a tummy tuck, and it is significantly more invasive than mere fat reduction. Tummy tucks remove skin and other tissue to smooth and reshape the abdomen. Muscle repair and reconstructing the navel is also possible. Tummy tucks may include liposuction as part of the body contouring process. Liposuction removes fat only, not sagging skin. It leaves much smaller scars and is ideal for spot treatment.