Cloacal exstrophy in newborn infants

Cloacal exstrophy in a male (A) and female (B) newborn infant. The anus is imperforate, and the hindgut exits from the lower abdominal wall. In both patients, the bladder is split in half (seen best in the female; arrowheads), separated by the hindgut (asterisks). The umbilicus and omphalocele are seen superior to the split bladder and hindgut. The external genitalia are also split; the male has a small hemiphallus (arrows) associated with the scrotum.