Anal examination
Anal examination, doctors typically use a examination of the anus, check the depth of 8~ 10 cm, whereas rectal length12~ 15 cm, so that examination can detect more than 60% of the rectum. According to the more recent anal more prone to cancer facts, anal examination can detect80% of colorectal cancer and polyps or benign tumor of early lesions.
Many people will have hemorrhoids by refus check, this reason is untenable. Since we know that they have hemorrhoids, more let the doctor check clearly understand, diagnosis, have a look is serious, need immediate treatment. The presence of interference and hemorrhoids colorectal cancer discovered in a timely manner, it is serious of colorectal cancer in stool, is mistaken for hemorrhoids, a lesson that meet the eye everywhere.
For the men, anal examination there is a big advantage, is able to detect whether the hyperplasia of prostate. Hyperplasia of prostate hyperplasia with forward influence micturition, also has a rearward development difficult to detect. The latter has long been ignored, but dangerous. A lot of prostate cancer fails to timely discovery, such is the case.
Fecal occult blood screening
Anal examination can be found in most of the rest of the upper end portion of rectal cancer, rectum and the entire colon tumor how to find? Theoretically, the population over the age of 50should be every 5 years for a fiber colonoscopy, but the problem is that the cost of expensive, for most people is put too much," output" is too small. Then, a simple and inexpensive method to get the key recommendation of faecal occult blood testing, this is.
What is occult blood in the stool? A lot of people have such understanding: pull the bright red blood, generally because of hemorrhoids; Laplace color black, general stomach bleeding; thin stool, rectal cancer may be. Then, then normal, color traits in general can sleep without any anxiety, do not have to worry about colorectal cancer.? Study found that, in colorectal cancer early, including has not developed to cancerous polyp and benign period, these lesions are difficult to feel, but the lesion site itself is relatively weak, will often be dung stimulation leads to a very small amount of bleeding or oozing, by visualizing no abnormal stools, this is in the stool occult blood.