Colorectal cancer is a high-risk cancer, which includes the transformation of rectum and colon cancer. The most common part is the junction of rectum and rectum with sigmoid colon, accounting for 60% of the patients. Incomplete statistics show that colorectal cancer is mostly found in the middle and old, especially in the middle and old men, with the ratio of men and women 2:1. If colorectal cancer can be diagnosed and treated in the early stage, the survival rate of the patients can reach more than 80% in five years.
Unfortunately, according to the current statistics, only 5% of all patients can be diagnosed with colorectal cancer in the early stage. That is to say, some patients with colon cancer have reached the late stage when they find the disease, which not only means that the treatment is more difficult, but also indicates that the life of the patients may be approaching the end.
- stool shape change
Few people observe their own stool shape, but in fact, human stool mainly in cylindrical, snake shaped vertical decline. When cancer occurs in the intestine, it will occupy the original stool space, which will cause the change of stool shape, such as thin strip, flat strip, etc. are abnormal signals. And most patients have a feeling of urgency and heavy stool, and the poop is not clean after defecation.
- blood free
Blood free is the most common and early manifestation of colorectal cancer, and mild patients are occasionally a small amount of bleeding. With the continuous development of the disease, patients will have mucinous blood stool, purulent blood stool and blood stool and other manifestations. But because the symptoms are similar to dysentery, hemorrhoids and anal fissure, it is easy to be misdiagnosed by the patients, but the examination of colon cancer is ignored. In addition, some patients will also have black stool symptoms, that is, stool presents abnormal white oil color, and with strong odor.
- defecation times change
In the early stage of colon cancer, in addition to the change of stool shape and color, some patients’ stool habits will change. For example, the original one-day stool, recently, I don’t know what factors, suddenly increased to 3-4 times a day, or reduced to about 3 days, or diarrhea and constipation alternate, which may be the signal from colon cancer.
- don’t ignore abdominal pain
Although the early symptoms of colon cancer are not obvious, some patients also have abdominal pain with uncertain location, or abdominal discomfort, abdominal fullness and so on. When colon cancer is accompanied by erosion, obstruction or secondary infection, there may be obvious abdominal colic and incomplete intestinal obstruction abdominal pain symptoms. Patients consciously have the same pain as gas, and then the pain suddenly disappears.