[Aplasia cutis congenita in a premature infant].

A premature male dizygotic twin born at gestational age of 28 weeks with skin lesions located on hands, knees, pretibial regions and feet is presented. The patient differs from previously reported cases of aplasia cutis congenita (ACC) in that the cutaneous manifestations first appeared 10 days after birth. The twin brother was healthy. Based on the clinical manifestations the patient was regarded to have ACC (group 6).