Aplasia cutis congenita of the scalp: delayed closure complicated by massive hemorrhage.

A case of aplasia cutis congenita involving the scalp, cranium, and dura is presented to illustrate the complication of major hemorrhage from the sagittal sinus that may occur if closure is delayed. Subsequent problems with scalp-flap cover eventually required split-skin grafting of the defect. The case for surgery as soon after birth as possible is reinforced.