How to effectively screen for small intestine cancer? Small bowel cancer refers to malignant tumors occurring in duodenum, jejunum and ileum, which are relatively rare. For the screening of small bowel cancer, fecal occult blood test; tumor marker examination: carcinoembryonic antigen, CA-199, CA-125, etc.; meanwhile, some imaging auxiliary examinations can be done: CT, MRI, PET/CT, etc. Here, we will mainly understand the imaging examinations of small intestine cancer. Imaging examination of small intestine cancer 1.Small intestine cancer barium imaging Small intestine barium imaging can show the location and scope of small intestine disease, but the positivity rate is low. The gas-barium double imaging method, especially the intubation method of small intestine gas-barium double imaging, can increase the diagnosis rate of small intestine hemorrhagic lesions by 10% to 25%. Small intestine barium imaging has almost no diagnostic value for vascular lesions. 2.Radionuclide imaging Radionuclide imaging is a non-invasive examination, mainly used for the localization of small intestinal bleeding, and its sensitivity is stronger than that of angiography. Its positive rate of small intestine active bleeding diagnosis is 40% to 50%, but sometimes there are false positives. 3, angiography Angiography is chosen for small intestinal diseases, especially for gastrointestinal bleeding. This method is an effective diagnosis and treatment method, as long as we can see the extravasation of contrast agent, we can make a definite diagnosis and carry out embolization treatment at the same time. However, this test is affected by the rate of blood loss and the timing of the test, and the contrast agent must be injected into the blood supply artery at the bleeding site during the active bleeding period in order to be successful. 4.CT simulation endoscopy The use of spiral CT thin layer without interval scanning and computerized three-dimensional reconstruction, you can obtain a dynamic reconstruction of the image similar to endoscopy. Its limitations are that it cannot observe mucosal color changes, cannot distinguish superficial fine structure changes, and cannot perform biopsy and microscopic treatment. Next, let’s understand what causes small intestine cancer and prevent it from the source. Causes of small bowel cancer Bowel cancer may be complicated with Crohn’s disease, celiac disease – gluten intolerance, familial intestinal polyposis, etc. If you have Crohn’s disease, factors such as prolonged illness, fistula, surgical resection over intestinal segment may lead to the occurrence of small bowel cancer. Activation of oncogenes and deletion of oncogenes are also causative factors of small intestine cancer. The high proportion of animal fat and protein in the diet and the low content of fiber can also induce the formation of small bowel cancer.