Monoamniotic twins with a common umbilical cord.
D000022:Abortion, Spontaneous; D000328:Adult; D005260:Female; D005333:Fetus; D006801:Humans; D011247:Pregnancy; D014428:Twins, Conjoined; D014470:Umbilical Cord / Q000002:abnormalities* / Q000473:pathology