Body contouring following massive weight loss is referred to as bariatric surgery, when someone has been overweight for a long time and the skin has grown to fit around the increase in mass, weight loss can leave a large mass of skin overhangs or sits in folds on a smaller frame.
This is still a relatively new field of surgery and involves a coordinated approach to removing excess tissue so as to restore a natural and seemless shape. Depending on the amount of excess skin, the technique can vary from person to person.
Bariatric surgery consists of:
Removing excess or flabby under- arm and upper inner thigh
Tummy tuck or excising excess tissue from the whole lower torso
Breast augmentation and /or mastopexy (breast lift)
This can be very extensive surgery, and the patient must be fit, be of relatively normal weight, and not be a smoker.