Mosaic tetrasomy 21 is mosaic tetrasomy 12p some of the time.
D002675:Child, Preschool; D002869:Chromosome Aberrations / Q000235:genetics*; D025063:Chromosome Disorders; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D008297:Male; D009030:Mosaicism; D010641:Phenotype