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Klinefelter's Syndrome

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Klinefelter’s syndrome A genetic disorder in males caused by having an extra x chromosome. Males with this disorder may have larger than normal breasts, a lack of facial and body hair, a rounded body type, and small testicles. They may learn to speak much later than other children and may have difficulty learning to read and write. Klinefelter's syndrome increases the risk of developing testicular cancer.�