48,XXXY/49,XXXXY Mosaicism in a 4 month old infant.
D001706:Biopsy; D002478:Cells, Cultured; D003878:Dermatoglyphics; D004569:Electroencephalography; D005385:Fingers / Q000002:abnormalities; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000175:diagnosis; D007621:Karyotyping; D008297:Male; D009030:Mosaicism; D010808:Physical Examination; D012729:Sex Chromosome Aberrations / Q000175:diagnosis*; D013737:Testis / Q000473:pathology