How to do colorectal cancer screening

How to do bowel cancer screening?

Colorectal cancer screening can be done through abdominal CT scans, endoscopy, biopsy and exfoliative cytology.

1. Abdominal CT examination: Abdominal CT is an important method for determining the stage of colorectal cancer before surgery. It can clearly show the degree of invasion of colorectal cancer, lymph node metastasis, and is of great significance in determining the resectability of the tumor.

2. Endoscopic examination: Proctoscope and sigmoidoscope are suitable for colorectal lesions with lower lesions. Full colonoscopy is recommended for patients suspected of colorectal cancer, but not for patients with poor general condition, poor tolerance, acute peritonitis, intestinal perforation, extensive adhesions in the abdominal cavity, perianal or severe intestinal infection.

3. Biopsy and exfoliative cytology examination: During electronic colonoscopy, if there are tumors or polyps in the intestine, timely biopsy and pathological examination can clarify the nature of the tumor, early detection and early diagnosis. Some patients may not have any symptoms of early tumors. Pathological examination can detect pathological changes in local tissues, so biopsy is very important.

In addition, there are routine stool tests plus occult blood and tumor marker tests. For patients with colorectal cancer, surgical treatment can be used under the guidance of a doctor, such as partial colon resection, and radiotherapy can be used after the operation.