title: Chromosomal mosaicism of trisomy 7 restricted to chorionic villi.
abstract: Chromosomal mosaicism confined to the placenta is a serious problem in first-trimester fetal diagnosis. We report a case of mosaicism of trisomy 7. The aneuploid cell line could not be confirmed in fetal tissue.
mesh_terms: D000328:Adult; D002824:Chorionic Villi / Q000648:ultrastructure*; D002897:Chromosomes, Human, Pair 7; D005260:Female; D006801:Humans; D009030:Mosaicism; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014314:Trisomy