[Necrobiosis lipoidica. Report of 4 cases and review of the literature].

Necrobiosis lipoidica belongs to the inflammatory granulomatous skin disorders groups with palisade reaction. The association to diabetes mellitus is classical involving 80% of diabetics in its tibial localization. A retrospective study of all cases of necrobiosis lipoidica conducted in our dermatology department over a-15-year period, found 4 diabetic patients, 3 of whom were women known as diabetic patient with extremities involvement, and 1 man not known as diabetic patient at the time of the diagnosis. Necrobiosis lipoidica appears to be a rare disorder in diabetic people and this association seems to be over estimated.