\n\n
首先是盆腔内的淋巴结,当它们占领这些地方后,就会继续向更远的地方进发。一旦它们跑出盆腔,就如同“成吉思汗的铁骑”一般势不可挡,一直会蔓延到纵膈、锁骨上淋巴结。到那个时候,再精湛的手术也无法阻挡它们了。
\n\n所以说,盆腔淋巴结是保卫家园的战斗前沿,只有守住这块土地,才能有效地阻止肿瘤细胞的蔓延。
\n\n为了打赢这场战斗,我们必须将那些被肿瘤细胞侵占的堡垒,也就是淋巴结,全部切除,于是就有了淋巴结清扫术。
\n\n清扫的意思就是要把我们眼睛能看见的所有淋巴结都切除干净,就像扫地一般。只有通过全面的盆腔淋巴结清扫,我们才能够将可能转移的肿瘤全部切除,同时也是判断患者预后的重要依据,因为淋巴结转移与否和患者的生存时间息息相关。
\n\n医生们经过几十年的努力,已经确定宫颈癌最容易转移的淋巴结一共有八组,每一侧盆腔有四组,每一组有 3~6 枚淋巴结不等。这些淋巴结就像葡萄一般围绕着盆腔内的大血管生长着,有些显露在外,有些则藏在脂肪里面。
\n\n宫颈癌细胞一般会先侵犯离它最近的那一组,然后再依次向前进发。
\n\n那一组最先受侵犯的淋巴结我们也称之为“前哨淋巴结”,它们就像我们的“侦察兵”,守在最前线,也是最早牺牲的。如果它们都还活着,说明我们的家园是安全的,所以,现在有些研究者并不直接清扫所有淋巴结,而是先切除前哨淋巴结,因为如果前哨淋巴结是正常的,那么患者就可以免于全面的淋巴结清扫了。当然,肿瘤细胞的转移也并非绝对遵循“一站一站”的规律,有时候也会出现“跳跃式”的转移,所以,盆腔淋巴结清扫术暂时还是无法替代的。
\n\n宫颈癌淋巴结清扫的意义并不只在于将肿瘤切除,它还可以通过病理确定淋巴结转移的位置、数目,这也是非常重要的。因为除了手术以外,我们还有许多抵抗肿瘤细胞的手段,放疗就是其中最重要的一种。它和手术的不同之处在于它是通过放射线直接杀灭肿瘤细胞的,而且范围可以覆盖整个盆腔甚至更大的区域。如果说手术是“机枪”的话,那么放疗绝对是“原子弹”级别的。
\n\n当然,凡事都有利弊,原子弹的威力虽然巨大,但是造成的伤害也是无法估量的,它可以引起放射性膀胱炎、放射性直肠炎、白细胞减少等等。所以,在放疗之前必须先通过淋巴结清扫术来确定有没有淋巴结转移以及转移的部位,只有这样,才能使放疗的定位更为精确,同时减少不必要的副作用。
\n\n 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