Placenta membranacea.
D000293:Adolescent; D005260:Female; D006801:Humans; D010920:Placenta / Q000473:pathology; D010922:Placenta Diseases / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D011247:Pregnancy; D014463:Ultrasonography; D014592:Uterine Hemorrhage / Q000209:etiology