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Klinefelter's syndrome is a genetic disorder which means that men have an XXY chromosome set up rather than the usual XY (for a male). The XXY almost always causes feminisation of men or anti-masculinisation. Klinefelter's syndrome can be extreme or non-apparent depending on the person. Usual symptoms can be : Enlarged breasts Wide hips Voice not breaking Narrow shoulders Long arms or legs testicular atrophy (small testicles) infertility
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