Conjoined twins.
D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D008297:Male; D008423:Maternal Age; D007744:Obstetric Labor Complications; D010298:Parity; D011247:Pregnancy; D011248:Pregnancy Complications; D011272:Pregnancy, Multiple; D011273:Pregnancy, Prolonged; D013903:Thoracic Surgery; D013909:Thorax / Q000002:abnormalities / Q000601:surgery; D014310:Triplets; D014427:Twins; D014428:Twins, Conjoined