Vernix caseosa peritonitis presenting post partum as acute cholecystitis.

V caseosa, the “cheese-like” white cutaneous material covering the skin of newborns, is a very unusual cause of peritonitis. Only 15 cases of this entity have been described. Although spillage of amniotic fluid into the peritoneal cavity is almost inevitable after cesarean section, this spillage is usually insignificant and only rarely does it progress to peritonitis. The exact mechanism for the development of peritonitis in these few cases is unknown. We present a case of peritonitis due to vernix caseosa post partum in a 27-yearold woman whose presentation mimicked acute cholecystitis.