Dipygus (caudal duplication).
D009008:Abnormalities, Severe Teratoid / Q000601:surgery*; D005837:Genitalia, Male / Q000002:abnormalities; D006554:Hernia, Umbilical / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D007668:Kidney / Q000002:abnormalities / Q000601:surgery; D007866:Leg / Q000002:abnormalities; D008297:Male; D010388:Pelvis / Q000002:abnormalities / Q000601:surgery