title: A boy with karotype 49, XXXXY.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007621:Karyotyping; D008297:Male; D012729:Sex Chromosome Aberrations / Q000175:diagnosis*
vernacular_title: Chlapec s karyotypem 49, XXXXY.