What tests are done to diagnose colorectal cancer

Experts say that anorectal examinations are less painful, and patients need to open up and take responsibility for their own health. Anorectal examinations once a year can effectively prevent and detect diseases early, especially for patients with related symptoms such as blood in the stool, prolapse, pain, and difficulty defecating.

What are the other common methods for colorectal cancer screening?

1. Fecal occult blood test

Usually, there may be no signs of intestinal cancer in its early stages. Cancer cells can grow on the intestinal wall for decades before metastasizing to other parts of the body. Before any symptoms appear, the proliferating tissue may exude a small amount of blood, which enters the stool and is excreted. The fecal occult blood test is to detect blood components in the stool. If multiple and continuous positive reactions indicate gastrointestinal bleeding, further examinations should be performed to alert the occurrence of intestinal tumors.

This test is currently the most widely used and evaluated test method in colorectal cancer screening. It is simple, quick and painless.

2. Serum carcinoembryonic antigen test

Although serum carcinoembryonic antigen examination does not have specific diagnostic value, it is of great value in estimating the prognosis of colorectal cancer, detecting efficacy and recurrence.

3. Colonoscopy

Anyone who has blood in the stool or changes in bowel habits and no abnormalities are found in the rectal examination should undergo sigmoidoscopy or fiber colonoscopy. Currently, fiber colonoscopy is the most effective, safest and most reliable method for diagnosing intestinal lesions. The vast majority of early colorectal cancer patients can be detected and diagnosed by endoscopic examination.

Check for colorectal cancer and try biological treatment

Biological treatment for colorectal cancer can effectively kill cancer cells in the patient's body, leaving no chance for cancer cells to recur or metastasize. Its greatest advantage is that it uses the patient's own cells to inhibit and kill cancer cells, does not produce biological rejection, can reactivate the patient's immune system, and can improve the patient's own immunity, causing the tumor to lose its biological activity and remain in a relatively static state, making it possible for colorectal cancer patients to truly "live with tumors."