What are the diagnostic methods for colon cancer?

What are the diagnostic methods for colon cancer? With the continuous advancement of medical technology, the diagnostic methods for colon cancer have become increasingly sophisticated. So far, there are many laboratory tests used for the diagnosis of colon cancer. The following is an introduction to the diagnostic methods for colon cancer.

Diagnosis of colon cancer 1. Anal examination and rectal endoscopy: used to check for rectal polyps, rectal cancer, internal hemorrhoids or other lesions

Diagnosis of colon cancer 2. Sigmoidoscopy and fiber colonoscopy: Although the sigmoidoscope is 25 cm long, 75% of colorectal cancers are within the scope of the sigmoidoscope. Microscopic examination can not only detect tumors, but also observe their size, location and local infiltration range. Through the sigmoidoscope, tissue can be taken for pathological examination. Skilled operators can insert the fiber colonoscope into the cecum and terminal ileum, and can also take photos. It is indeed an ideal diagnosis method for colon cancer.

Diagnosis of colon cancer 3. X-ray examination

Abdominal plain film examination and barium enema examination: Abdominal plain film examination is suitable for cases with acute intestinal obstruction; barium enema examination can show that the intestinal wall at the site of cancer is stiff, has poor distensibility, peristalsis weakens or disappears when it reaches the lesion, the colon bag is irregular or disappears, the intestinal cavity is narrow, the mucosal folds are disordered, destroyed or disappeared, and there is a filling defect. Barium-air double contrast radiography is more helpful in diagnosing pedunculated tumors in the colon. Diagnostic methods of colon cancer 4. Carcinoembryonic antigen test: This diagnostic method of colon cancer has little diagnostic value for early cases, but it is helpful to infer prognosis and judge recurrence.

What are the diagnostic methods for colon cancer? It is worth mentioning that colon cancer is mainly adenocarcinoma, and the rest are mucinous adenocarcinoma and undifferentiated carcinoma. The gross morphology can be polyp-like, ulcerative, etc. Colon cancer can develop along the intestinal wall in a circular manner, spread up and down along the longitudinal diameter of the intestinal tube, or infiltrate into the deep layer of the intestinal wall. In addition to metastasis through lymphatic vessels and blood flow and local invasion, it can be implanted into the abdominal cavity or spread along sutures and incision surfaces. It is more common in middle-aged men, and those who have transformed from adenomas and polyps to cancer have a younger age of onset. Therefore, early diagnosis of colon cancer is more critical.

The above is the diagnosis method of colon cancer. Expert Tips: If your health shows symptoms of the disease, you can choose the appropriate treatment according to your symptoms, but do not delay the diagnosis, and do not let your life be ruined in hesitation. You should go to a regular hospital for medical treatment in time to avoid delaying the disease and causing serious consequences. If you have other questions, please consult our online experts or call for consultation. Believe in miracles, and wish you health, happiness, and joy!

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