How to detect colorectal cancer early

Written by Yan Chun

Oncology

Updated on December 29, 2024

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In clinical practice, to detect colorectal cancer early, screening should be prioritized for individuals with a family history of colorectal cancer. This generally involves tests for tumor markers and colonoscopy examinations. The tumor markers include carcinoembryonic antigen, carbohydrate antigen 724, carbohydrate antigen 199, and carbohydrate antigen 125, among others. Colonoscopy examinations should be conducted annually. Furthermore, for individuals with colorectal polyps, yearly colonoscopy is especially recommended to detect early stages of colon cancer. Similarly, for individuals suffering from chronic inflammatory diseases of the colon and rectum such as ulcerative colitis or Crohn's disease, colonoscopy examinations should also be performed to facilitate early detection of colorectal cancer.

Other Voices

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Is rectal bleeding an indication of rectal cancer?

Rectal bleeding is not necessarily colorectal cancer; there are several reasons for rectal bleeding: First, caused by constipation, which leads to difficulty during bowel movements and tearing of the anal mucosa, resulting in bleeding. Second, ulcerative colitis, which commonly presents symptoms such as abdominal pain, diarrhea, and blood and mucus in the stool. Third, rectal or colon cancer, where the main symptoms also include abdominal pain, changes in stool characteristics, and rectal bleeding. Fourth, ischemic bowel disease, generally seen in older patients with some cardiovascular and ischemic diseases, where symptoms mainly include significant abdominal pain and rectal bleeding. Therefore, not all cases of rectal bleeding are due to rectal cancer; there are many causes, and it is essential to diagnose clearly before treatment.

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What is good to eat after rectal cancer surgery?

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