What are the most valuable tests for colon cancer

In order to confirm colon cancer clinically, a series of colon cancer examinations must be conducted. These colon cancer examinations can help doctors more accurately understand the physical changes of colon cancer patients and better treat them, which is beneficial to patients. So what are the most valuable examinations for colon cancer?

1. X-ray examination: This type of colon cancer examination includes barium meal examination of the entire digestive tract and barium enema examination. It can observe the overall shape of the colon, whether there are multiple polyps and multiple cancer foci, and provide a basis for surgical treatment of patients with colon cancer. The initial signs of the disease may be intestinal wall stiffness and mucosal destruction, followed by constant filling defects and intestinal stenosis. Double contrast examination of air-barium is more effective.
2. Endoscopic examination: For patients with blood in stool or changes in bowel habits, but no abnormalities found in rectal examination, colon cancer should be routinely examined by fiber colonoscopy. It can not only detect various types of colon lesions, but also take tissue biopsy to confirm the diagnosis, so as to avoid missed diagnosis or misdiagnosis.
3. Serum carcinoembryonic antigen (CEA) test: It has no specificity for detecting and diagnosing colon cancer. Increased values ​​are often related to tumor growth. They can return to normal values ​​after complete resection of the colon tumor. They can increase several weeks before recurrence. Therefore, it is helpful for estimating prognosis, monitoring efficacy and recurrence, and is of great significance for the examination of colon cancer.