title: Prenatal diagnosis of trisomy 18. Pathologic findings in 20-week conceptus.
mesh_terms: D000015:Abnormalities, Multiple; D000028:Abortion, Induced; D000649:Amniocentesis; D002902:Chromosomes, Human, 16-18; D004423:Ear / Q000002:abnormalities; D005260:Female; D005865:Gestational Age; D006228:Hand Deformities, Congenital; D006505:Hepatitis / Q000151:congenital; D006801:Humans; D007621:Karyotyping; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012886:Skull / Q000002:abnormalities; D013577:Syndrome; D014314:Trisomy