Unusual extra chromosomes in the mother of a 18-trisomy newborn.
D000328:Adult; D000782:Aneuploidy; D002869:Chromosome Aberrations / Q000235:genetics*; D025063:Chromosome Disorders; D002902:Chromosomes, Human, 16-18; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D014314:Trisomy