[The benign symmetrical lipomatosis (adenolipomatosis Launois-Bensaude; Madelung's fat neck)].

A case of benign symmetric lipomatosis is reported in conjunction with a review of the literature. The association with metabolic disorders such as gout and hyperlipemia, as reported by others, is fortuitous and not statistically significant. The etiology of this rare type of lipomatosis is unknown; its treatment is surgical and should be confined to cases with symptoms of compression or extremely disturbing appearance.