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女子长6个乳房均正常大小 医生称返祖现象

2016-05-20 16:37:28   中国新闻网

48岁的张艳丽(化名)有个不雅的外号“蝙蝠侠”,因为,她一伸胳膊,每个上臂至腋窝处会各垂下两个肉团。省妇幼保健院的医生告诉她,这4个肉团是乳房,又称“副乳”,是人类一种返祖现象。

“副乳的发生率不算低,但是像她这样,一下子又多了四个副乳的现象比较少见。”省妇幼保健院乳腺科主任冯爱强说。

张艳丽告诉记者,最早发现自己身体出现异样大概是青春期时,那时,自己的乳房开始发育,与此同时,她两个上臂下侧和腋窝处各出现了肉球样的包块。起初,她以为是自己发胖所致,并没太在意,但随后,她发现这些小肉球会随着她怀孕、生子而增大。

随后,她也曾去当地一家小医院诊治,但医生也没说清是怎么一回事。今年5月初,她来到了省妇幼保健院。接诊的是乳腺一科副主任张彦武教授,经过检查,张彦武发现,张艳丽原来是“双侧腋下副乳和上臂内侧副乳”,也就是说患者除了胸前的两个乳房外,又长出了4个副乳房,而且这4个副乳的体积如同正常乳房般大小,所不同的只是副乳上没有乳头。

“已经影响到生活的副乳,切掉即可。”冯爱强说。

5月12日,经过4个小时的手术,张彦武为张艳丽切除掉了四个副乳,并为她再造了腋窝、修复了上臂。

“一下子感觉轻松多了。”昨天,手术后的张艳丽高兴地出院回家了。

冯爱强说,生长副乳其实是一种返祖现象。“哺乳动物一般都是多乳房的。”冯爱强说,人类胚胎在发育过程中,从腋窝到腹股沟有一对生乳线,在线上有6至8对乳头状局部隆起,这些“隆起”被称为乳房始基。正常情况下,胎儿长到第九周,其余的“乳房始基”自行退化、消失,只留下胸部的一对得到发育,形成正常的乳房。如未退化或退化不全,便成为副乳,生长的位置,最常见于腋窝部。这种现象,男女均可发生。

责任编辑:柯旺 CN044
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