Monoamniotic twins.
D000293:Adolescent; D000328:Adult; D000650:Amnion / Q000002:abnormalities*; D005260:Female; D005313:Fetal Death / Q000453:epidemiology; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011272:Pregnancy, Multiple