How does a blood test confirm rectal cancer

How can blood tests confirm rectal cancer? What tests are done in the hospital for rectal cancer? Fecal occult blood test is an initial screening method, and further tests will be done if it is positive. Rectal digital examination should be done when the patient has blood in the stool and changes in bowel habits. This can detect the location, size, and range of the cancer. Endoscopic examination: commonly used proctoscopy, sigmoidoscopy, and fiber colonoscopy can be used to obtain living tissue for pathological examination.

Generally speaking, 1. Blood test for CEA, 2. Check for occult blood in the stool, 3. Do a colonoscopy. If the initial examination results are good, especially if the colonoscopy is clean and there are no polyps, etc., you can have a checkup every 2-5 years. However, as you age, have constipation habits, and have a larger waist and abdominal circumference, you should increase the frequency of examinations to once a year.

For the first case, at least the following should be checked: 1. Blood test for CEA, 2. Check for occult blood in the stool, 3. Do a colonoscopy. If the colonoscopy cannot pass through the entire colon due to intestinal tumors, a barium enema should be performed. 4. Enhanced CT scan of the abdomen, pelvis, and chest. If conditions permit, a PETCT scan can better distinguish between primary cancer and metastatic cancer. Only after the examination is complete can the doctor make a reasonable treatment plan. Be sure to check and treat early, and don't delay the best treatment time.