Do you know what are the diagnostic methods for colorectal tumors?

Recently, it was reported that the misdiagnosis rate of colorectal cancer is as high as 50% to 80%, and most of the misdiagnosis and mistreatment last for more than half a year, or even longer, which makes patients lose the opportunity of early cure. Therefore, middle-aged and elderly people pay more attention to the diagnosis method of colorectal cancer.

What are the diagnostic methods for colorectal tumors? Experts will give you detailed introduction:

1. Double contrast enema: Barium or air-barium double enema is an indispensable clinical examination for colon cancer. Its purpose is to observe the overall shape of the large intestine and whether there are multiple polyps and multiple cancers.

2. Endoscopic examination: Patients with blood in stool or changes in bowel habits who do not have any abnormal findings during rectal examination should undergo routine sigmoid colon or fiber colonoscopy, which is one of the diagnostic methods for colorectal tumors.

3. Rectal digital examination: Digital examination is the most important and indispensable method for diagnosing rectal cancer. Rectal cancer accounts for 70% to 80% of cases, and is located 8 to 10 cm above the anal margin. It can usually be touched during rectal digital examination.

4. Rectal or sigmoidoscopy: This examination is suitable for patients whose tumors are located at a higher position and cannot be palpated by digital palpation, or for patients whose tumors can be palpated by digital palpation but have no preoperative pathological diagnosis. In this case, a tissue biopsy should be taken to confirm the diagnosis to avoid missed diagnosis or misdiagnosis.

5. Serum carcinoembryonic antigen (CEA) test: It is not specific for detecting and diagnosing colorectal cancer, but it is helpful for estimating prognosis, monitoring efficacy and recurrence, especially for those with liver metastasis.

6. CT or MRI examination: mainly used to understand the extent of tumor infiltration into the intestine and whether there is local lymph node or distant organ metastasis. It can be used for preoperative staging and postoperative review.

These are the diagnostic methods for colorectal tumors. I hope the above content can be helpful to patients. If you have other questions, please consult online experts.