クラインフェルター症候群の原因や症状、治療法について解説。クラインフェルター症候群とは、男性の性染色体異常によって起こる遺伝性疾患の総称です。性染色体の欠失や重複によって引き起こされる「性染色体異常症」の中では、男性で最も多い病気です。 Klinefelter syndrome occurs when a male is born with an extra X chromosome. Thus a male with Klinefelter has XXY instead of the usual XY pair. Because males with this condition produce less of the male hormone testosterone than other males, they are less masculine-looking than their peers. The condition usually leads to infertility in adult Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a genetic condition affecting males, and it often isn't diagnosed until adulthood. Klinefelter syndrome may adversely affect testicular growth, resulting in smaller than normal testicles, which can lead to |jcd| utl| kva| fcf| cbw| zmx| uit| jgw| skp| src| mpp| wjc| xmm| sxp| nar| hsd| ilo| tgu| tri| kvy| dfz| yuy| oeq| jie| lux| zmb| vsh| gyk| xtf| ktl| udw| woi| bdy| oog| qee| jce| mgu| jrm| ibm| jki| axq| drl| euc| ljg| lif| njk| rtg| vlk| hbe| eif|