title: A new case of XX-male (XX/XXY mosaic).
abstract: We report a 10-year-old male patients with the predominant karyotype 46,XX. In only one cell of the testis culture a metaphase with 47,XX+G was found. The theories of etiology of XX-males and the reported cases of XX/XXY-mosaics in the literature were discussed.
mesh_terms: D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009030:Mosaicism; D012729:Sex Chromosome Aberrations / Q000175:diagnosis* / Q000473:pathology; D013737:Testis / Q000473:pathology; D014960:X Chromosome