title: [2 cases of very rare double 48,XXX, +21 trisomy].
mesh_terms: D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007223:Infant; D012730:Sex Chromosomes; D014314:Trisomy; D014960:X Chromosome
vernacular_title: Due casi della rarissima doppia trisomia 48,XXX, +21.