Aplasia cutis congenita in monozygotic twins

Aplasia cutis congenita (ACC) is defined as complete or partial loss absence of skin at birth and it can occur on any part the body, but most commonly scalp. Single offspring with ACC have been reported in case reports, cases twins are rarely reported. Here, we report two ACC, monozygotic twin boys presented scattered over scalp vertex after birth. All lesions ulcers no hair healed scars, otherwise, were well developed mentally physically. In addition, whole exome sequencing their parents might provide diagnosis classification assistance.