title: Acardiac acephalus twins: a case report and review of literature.
mesh_terms: D009008:Abnormalities, Severe Teratoid / Q000175:diagnosis / Q000196:embryology; D000328:Adult; D004200:Diseases in Twins / Q000196:embryology; D005260:Female; D005318:Fetal Heart / Q000002:abnormalities; D005333:Fetus / Q000002:abnormalities*; D006257:Head / Q000002:abnormalities / Q000196:embryology; D006801:Humans; D011247:Pregnancy; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal