[Plastic surgery and obesity: why, when, how?].

In this review, we describe the main surgical procedures used in the plastic surgery of obesity: lipectomies and removal of excess fat tissues after weight loss, liposuction of localised fat deposits, surgery of breast hypertrophies. The main surgical procedures, their indications, their techniques and their long-term results are described. Such surgery should be part of a coherent and structured therapeutic project, defined together with the patient. The management and follow-up should be maintained on the long term after the initial weight loss and the surgical procedure, in order to reinforce the benefit and to prevent a weight regain.