A 1-day-old male with complete duplication of the caudal gut from the
terminal ileum to the anus with a normal, midline-localized anus and a
n imperforate right-sided anus with a rectourethral fistula and a skin
dimple is presented. He also had complete duplication of the bladder,
urethra, and penis (true diphallus), an umbilical hernia, spina bifid
a occulta covered by skin containing a capillary hemangioma, and separ
ation of the symphysis pubis, This case represents caudal twinning wit
h duplication of the hindgut, genitalia, and lower urinary tract.