BG真人版

结直肠癌是常见的胃肠道恶性肿瘤，发病率仅低于胃癌与食管癌，但近年来有增加的趋势。结直肠癌分布以直肠与乙状结肠多见，占70%左右。发病年龄以40~50岁最多，男性患者较多。本病病因不详，但与高脂低纤维饮食因素及某些息肉病、血吸虫病、溃疡性结肠炎有关。

daduoshudejiezhichangaizaibinglishangweixianai，qiciweinianyeaijiaoyangai、rutouzhuangaileiaixianlinaideng。yiqidatibinglibiaoxianfenweisanzhongleixing:

BG真人版①zengshengxing: zhongliuxiangqiangneishengzhang，chengcaihuazhuang，biaomiankeyouqiankuiyang，zhongliujidikuan，changbizenghou;

②jinrunxing: aizhongzhuyaoyanchangbijinrunzhichangbizenghou，bingbianchangraochangbichenghuanxingshengzhang，zhichangqiangxiangxinxingxiazhai;

③kuiyangxing: aizhongyounianmoxiangchangqiangshengzhangqiejinrunchangbigeceng，zhongyangbufenhuaisixingchengjudakuiyang，xingtaibuyi，shenerbuguize。

shijishang，changjiandeduoweiqizhongliangzhongleixingdehunhe，qieyimouyizhongweizhu。linchuangchangjiandezhengzhuangweifubuzhongkuaibianxueyufuxiehuoyouwanguxingbianmi，yikeyounongxuebianyunianyeyangbian。zhichangaizhuyaoweibianxuefenbianbianxiyulijihouzhonggan。

xxianzaoyingbiaoxianyileixingbutongerbiaoxiangeyi:

(1)zengshengxing: qiangneichuxianbuguizedechongyingquesun，lunkuobuzheng，bingbianduofashengyuchangbideyice，biaomiannianmozhoubipohuaizhongduanhuoxiaoshi，jubuchangbijiangyingpingzhi，jiechangdaixiaoshi，zhongliujiaodashikeshibeijitongguokunnan，bingbianqukechujizhongkuai。

(2)jinrunxing: bingbianquchangguanxiazhai，changleijiyixiaoduanchangguan，xiazhaikepianyuyicehuoxingchengxiangxinxingxiazhai，qilunkuokeguanghuazhengqi，yekechengbuguizezhuang，changbijiangying，nianmopohuaixiaoshi，bingbianqujiexianqingxi。benxingchangkeyinqigengzu，shenzhibeijizhiyuzhongliudexiajieerwanquanbunengtongguo，bingbianquyikechujizhongkuai。

(3)kuiyangxing: changqiangneijiaodadekanying，xingzhuangduobuguize，bianjieduobuzhengqi，juyouyixiejianjiao，kanyingzhouweiyoubutongchengdudechongyingquesunyuxiazhai，nianmopohuaizhongduan，changbijiangying，jiechangdaixiaoshi。

在笔试的考查中主要以X线钡餐检查检查为主要的检查手段，在本节内容中，分型以及其表现息息相关。此外，选择性血管造影也可用作结直肠癌与良性病变鉴别诊断，也可在明确癌肿后行进一步的介入治疗。