Surgical procedures for the construction of IUPU neobladder. a Take a 54-cm section of ileum. b The distal 39 cm of the ileum was detubularized along the antimesenteric border and folded at the mark points. c First fold of the distal ileal segment with the two 12-cm segments sutured together. d Second fold, forming the posterior wall of the neobladder and closing the anterior wall of the neobladder.