Early colorectal cancer no special symptoms, Later, if there are symptoms should think of colorectal cancer, should be timely inspection without delay. ① stool of change, such as the frequency is, constipation, hematochezia or mucus, such as bloody. ② abdominal distention, abdominal pain or touched abdominal mass. ③ the performance of a bowel obstruction. ① anemia, the evil of quality. Colon cancer checks to barium enema or a double contrast barium gas and fiber colonoscopy mainly DRE rectal cancer while the most simple and practical, or rectum mirror, sigmoid colon examination. CT, MRI, and other checks to the understanding of tumor invasion and metastasis found very helpful. The serum carcinoembryonic antigen (CEA) in a non-specific, but on the positive expression of colorectal cancer can be as high as 70 percent, so it more suitable for monitoring whether for postoperative recurrence and metastasis.
