Prenatal diagnosis of an XXY foetal karyotype in a woman with a previous 21-trisomic child.
Prenatal chromosome analysis revealed that a 34-year-old, gravida 2 mother was pregnant with a XXY foetus. She had previously given birth to a 21-trisomic boy with another spouse. Both parental karyotypes were normal, but a high frequency of associations between satellited chromosomes was observed in maternal lymphocytes. The possibility that increased satellite associations may predispose to aneuploidy in the offspring is discussed. The finding of normal testicular histology in the aborted XXY foetus provides evidence that the characteristic XXY testicular dysgenetic lesions are likely to occur not earlier than in the late prenatal period.
D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012729:Sex Chromosome Aberrations; D013737:Testis / Q000473:pathology; D014314:Trisomy; D014960:X Chromosome