ICD-9 / Health Information

XX male syndrome

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From Wikipedia, the free encyclopedia

XX male syndrome (also called de la Chapelle syndrome) is a rare sex chromosomal disorder in men. Usually it is caused by unequal crossing over between X and Y chromosomes during meiosis. Symptoms include small testes, gynecomastia and sterility.Men typically have one X chromosome and one Y chromosome in each diploid cell of their bodies. Women typically have two X chromosomes. XX males have two X chromosomes, but otherwise appear to be male.

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