What tests are done for early screening of colorectal cancer

What tests are done for early screening of colorectal cancer?

1. Early screening for colorectal cancer generally requires fecal occult blood tests, colorectal endoscopy, etc.

2. Intestinal cancer is a relatively common malignant tumor, including colon cancer, rectal cancer, etc. Some patients have no symptoms in the early stage, or the symptoms are not obvious, and only symptoms such as occult blood in the stool and indigestion appear. Intestinal cancer not only affects the patient's digestive system, but also affects the patient's liver, kidneys, bones and other systems when metastases occur, endangering the patient's life. In the early stages of intestinal cancer, a fecal occult blood test is generally required. The fecal occult blood test is a test method used to measure gastrointestinal bleeding. It can detect gastrointestinal bleeding that is invisible to the naked eye, and can also be used to detect red blood cells, hemoglobin, etc. hidden in the stool.

3. Colonoscopy is also a common examination method. Patients with colorectal cancer also need to undergo colonoscopy for early screening. During the examination, the endoscope is inserted into the intestine from the anus, so that the lesions in the intestine can be observed intuitively. By observing the presence of new organisms under the microscope, it is determined whether the patient has colorectal cancer. If possible, it is necessary to take samples and send them to pathology to identify the specific situation. Gastrointestinal tumor markers, such as CEA, CA199, and CA125 combined marker determination, can also be helpful for clinical screening of colorectal cancer.