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下消化道息肉包括空、回肠,结肠和直肠息肉,其中以结肠息肉最为多见,空、回肠少见。因此,可以认为结肠是下消化道息肉的好发部位,故本文重点介绍结肠息肉。一、发病率下消化道息肉的发病率,迄今尚无确切的统计资料。由于收集资料来源不一和检查方法不同,各家报告有显著差异。有人统计两组尸检资料,其发病率分别为10％和51％。但笔者认为结肠息肉的真正发病率,应该依赖当代的纤维或电子结肠镜检查为准。儿童和成人的发病率有差异,前者为1％,后者可高达70％。美国统计一组乙状结肠镜检查资料,其发病率为7～10％,钡灌肠气钡双重造影息肉发病率12.5％.国内统计一组2800例纤维结肠镜检查资料,检出下消化道息肉354例.其中结肠息肉346例,发病率为12.4％,小肠8例(空肠1例,回肠7例),发病率为0.3％。
Lower polyps of the digestive tract include air, ileum, colon, and rectal polyps, of which colon polyps are the most common and empty and ileum are rare. Therefore, it can be considered that the colon is a predilection site of polyps in the lower digestive tract, so this article focuses on the colon polyps. First, the incidence of gastrointestinal polyps incidence, so far there is no definite statistics. Due to different sources of data collected and different inspection methods, there are significant differences in reports. Some people have statistics on the autopsy data of the two groups. Their morbidity rates are 10% and 51% respectively. However, I believe that the true incidence of colon polyps, should rely on contemporary fiber or electronic colonoscopy prevail. The incidence of children and adults varies, with the former being 1% and the latter being as high as 70%. The United States statistics on a group of sigmoidoscopy data, the incidence rate of 7 to 10%, barium enema double contrast polyp incidence rate of 12.5%. Domestic statistics of a group of 2800 cases of colonoscopy data, detection of 354 cases of lower digestive polyps Among them, 346 cases of colon polyps, the incidence rate was 12.4%, 8 cases of small intestine (1 case of jejunum, 7 cases of ileum), the incidence rate was 0.3%.