Can colorectal cancer be detected by MRI?

Colorectal cancer is a very common disease in our country at present. Colorectal cancer is a kind of oncology disease. To treat colorectal cancer, we must find out the cause and then treat the disease. To treat it thoroughly, mood is also important. Don't be too nervous or too worried. So, can colorectal cancer be detected by MRI? The answer is yes. Let's take a closer look at it below.

The examination of colorectal cancer requires a series of examinations, including rectal digital examination, CT examination, MRI examination, post-operative examination, and biopsy examination. Only in this way can colorectal cancer be confirmed. If colorectal cancer is discovered, the cause must be identified before treatment. Do not delay treatment and go to the hospital as soon as possible to treat the disease.

1. Stool examination: Although the fecal occult blood test is not specific for the diagnosis of this disease, the method is simple and easy to perform. It can be used as a screening method or can provide clues for early diagnosis.

2. Rectal examination: Lower rectal cancer is much more common in my country than in other countries, accounting for 77.5% of rectal cancers. Therefore, most rectal cancers can be felt during rectal examination.

3. Sigmoidoscopy: 77.8% of colorectal cancers in China occur in the rectum and sigmoid colon. The commonly used sigmoidoscope tube is 30 cm long and can directly detect tumors in the anal canal, rectum and below the middle section of the sigmoid colon.

4. Barium enema X-ray examination: Patients with lesions in the upper sigmoid colon or higher should undergo X-ray barium enema examination. Ordinary barium enema X-ray examinations are prone to miss small colorectal cancers. It is best to use air-barium double contrast, which can improve the accuracy of radiological diagnosis and show the location and range of the cancer.

5. Fiber colonoscopy: It can clearly observe the entire colon and clamp suspicious lesions for pathological examination under direct vision. It is beneficial to the discovery of early and micro colon cancer and the diagnosis of cancer, further improving the diagnostic accuracy of the disease. It is the most important examination method for colorectal cancer.

6. Serum carcinoembryonic antigen (CEA) determination: Carcinoembryonic antigen (CEA) can be detected in the serum of patients with colorectal cancer. This is a glycoprotein that often appears in the serum of patients with malignant tumors. It is not a specific antigen related to colorectal cancer, so serum CEA determination is not specific for the diagnosis of this disease. However, using radioimmunoassay to detect CEA and make quantitative dynamic observations is of certain significance in judging the surgical effect of colorectal cancer and monitoring postoperative recurrence. For example, after the colorectal cancer tumor is completely removed by surgery, serum CEA will gradually decrease; if it recurs, it may rise again.

7. Other examinations: Rectal ultrasound scans can clearly show the range, size, depth and surrounding tissue of rectal masses, and can distinguish the fine structures of each layer of the rectal wall. The examination method is simple and can quickly provide images, which is helpful for selecting surgical methods and postoperative follow-up. CT examinations are important for understanding the degree of extraintestinal infiltration of tumors and the presence or absence of lymph node or liver metastasis, and are more accurate in diagnosing the recurrence of rectal cancer.