Urinary ascites in children owing to extravasation of urine from the bladder

Three cases of urinary ascites in infants secondary to extravasation of urine from the bladder are reported. The first reported case of intraperitoneal extravasation from a perforated bladder resulting from an umbilical cutdown and the second reported case of an intraperitoneal rupture of a congenital diverticulum of the bladder are included. Successful management of urinary ascites was achieved by immediate diversion. The diagnosis of a vesical perforation should be considered in an infant presenting with ascites.