Ascites and weight loss in a child: due to congenital division of the right atrium

Congenital division of an atrial chamber is a very rare congenital malforma tion that more commonly affects the left atrium but which may, in rare circ umstances, involve the right atrium. Such a divided right atrium may presen t with symptoms consistent with increased portal venous pressure. Reported is a case with unusual clinical presentation. The patient underwent resecti on of the dividing shelf with good postoperative results.