Congenital ulcerated subcutaneous fat necrosis of the newborn

A neonate, born from a mother with hypertension during the last trimester of gestation, presented with ulcerated lesions on the right lower limb that had been present since birth. The baby also had necrosis of the fifth toe of the right foot and generalized muscle hypoplasia of the entire limb. The histologic appearance of the cutaneous lesions was diagnostic of subcutaneous fat necrosis of the newborn. The congenital presence of subcutaneous fat necrosis is exceptional, and to date, ulcerated forms have not been reported in the literature.