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Abdominal cancer occurs when old or damaged cells divide and multiply uncontrollably. The underlying cause of this varies depending on the specific form of cancer. For example: Colorectal cancer commonly develops from adenomatous intestinal polyps in the colon that are not removed while still benign.
Infection with H. pylori is the primary identified cause of gastric cancer. Other risk factors for gastric cancer include chronic gastritis; older age; male sex; a diet high in salted, smoked, or poorly preserved foods and low in fruits and vegetables; tobacco smoking; pernicious anemia; a history of stomach surgery for benign conditions; and a family history of stomach cancer (6, 7).