Straight intestine , colon collectively referred to as colorectal cancer is the most common malignant tumor. Digestive tract tumors in the incidence of colorectal cancer and esophageal cancer and gastric cancer ranks second only to the third. More than 40 years of age or more, more men than women. The incidence of colorectal cancer and chronic inflammation (ulcerative colitis, schistosomiasis), colorectal polyps, adenomas, and some genetic factors. In addition, regular consumption of high protein, high fat, who are more yin anaerobic gut, bile acids can be broken down into unsaturated polycyclic torch, which is a carcinogen, coupled with less food intake cellulose , stool storage too long to stay, carcinogenic substances set, can easily lead to colon cancer.How the early detection of colorectal cancer should pay particular attention to the following:
How the early detection of colorectal cancer (1) to the blood of all the early symptoms of colorectal cancer, but colorectal cancer in different parts of the timing and nature of its emergence is different. Blood in the stool is often the first symptoms of cancer patients, early small amounts, more than one side of the big note with fresh blood. After a small number of patients in the feces, followed by the amount of droplets discharged more fresh blood; sigmoid colon due to proximity to the rectum, sigmoid colon cancer in the blood in the stool characteristics so similar to cancer, but the stool stays in the sigmoid colon length of time, become the color of blood in the stool dark, so dark purple or purple contact discharge stool, blood in the stool appeared relatively late time, the patient is not necessarily the first symptoms. Sometimes, because less blood, or a long stay in the body, the naked eye can not perceive, but do Ambassador hidden, blood test was positive. To be blood in the stool of colorectal cancer and hemorrhoids, anal fissure, bacterial disease, colitis, intestinal polyps, ulcer and other diseases caused by blood in the stool were identified.
(2) Ambassador habits including ambassadors, frequency of change, and constipation or diarrhea of unknown causes. Stool frequency in patients with rectal cancer can be increased, but each defecation little or no stool, but some discharge of mucus, blood, bowel movement once a different feeling. Some patients may be constipation or diarrhea after the stool is only the beginning of the dry end of the thinning or repeated alternating constipation and diarrhea.
How the early detection of colorectal cancer (3) to make a big note abnormalities were normal cylindrical, vertical discharge from the anus, if the rectal cavity cancer highlights the oppression feces, the exhaust note is often a large thinning, can change shape, can be presented flat, deformation and sometimes still attached to the big note with a trace of blood.
(4) diarrhea, some patients can be the first symptom of diarrhea. Patients with increased frequency of defecation per day, for the mucus bloody stool, mucus or glistening Nongxue will loose stools thin, there may be associated with acute, heavy feeling after this time should be a distinction between disease and bacteria.
(5) pain in about 50% of bowel cancer patients have pain during bowel movements, the degree of light to heavy.
(6) abdominal pain of patients with abdominal pain or prominent as the first symptoms, some patients showed typical of incomplete intestinal obstruction colic abdominal pain that is paroxysmal pain, accompanied by abdominal distension.
How the early detection of colorectal cancer (7) fatigue, anemia.