Monoamniotic twin pregnancy.
D000328:Adult; D000650:Amnion; D001755:Blastocyst / Q000502:physiology; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins; D014430:Twins, Monozygotic