What tests should be done for colorectal cancer?

What tests should be done for colon cancer? I believe many people have this question. Preventive tests for colon cancer are extremely important. The following laboratory tests and other examination methods can help diagnose or identify the occurrence of colon cancer. Let's follow the experts to learn about the examination methods for colon cancer .

1. Fecal examination: Although the fecal occult blood test is not specific for the diagnosis of this disease, the method is simple and easy to use. It can be used as a screening method or provide clues for early diagnosis. This is one of the examination methods for colon cancer.

2. Rectal digital examination: Lower rectal cancer is much more common in my country than in foreign countries, accounting for 77.5% of rectal cancer. Therefore, most rectal cancers can be felt during rectal digital examination.

3. Sigmoidoscopy: 77.7% of colorectal cancer in China occurs in the rectum and sigmoid colon. The commonly used sigmoidoscope tube is 30 cm long and can directly detect tumors in the anal canal, rectum and below the middle section of the sigmoid colon.

4. Barium enema X-ray examination: Patients with lesions in the upper sigmoid colon or higher should undergo X-ray barium enema examination. Ordinary barium enema X-ray examinations are prone to miss small colorectal cancers. It is best to use air-barium double contrast, which can improve the accuracy of radiological diagnosis and show the location and range of the cancer. This is the examination method for colon cancer.

5. Fiber colonoscopy: It can clearly observe the entire colon and clamp suspicious lesions for pathological examination under direct vision. It is beneficial to the discovery of early and small colon cancers and the diagnosis of cancer, further improving the diagnostic accuracy of the disease. It is the most important method for colon cancer examination.

The above is an introduction to the examination methods for colon cancer. I hope the above content can be helpful to you. If you have any questions about colon cancer, you can contact our online experts and they will give you detailed answers.

For more information, please visit the colon cancer special topic at http://www..com.cn/zhongliu/jca/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.