The first manifestation of right colon cancer is gastrointestinal bleeding, mainly bloody stool and hemorrhagic anemia. The left colon is prone to intestinal obstruction after growing a tumor because of its small intestinal cavity.
In the case of incomplete intestinal obstruction, intestinal contents will not pass smoothly, and bowel sounds will definitely be hyperactive. Another is that after intestinal obstruction, the bacteria in the intestinal cavity will overgrow and produce more gas, and patients will have abdominal distension, increased exhaust and burping, which are normal phenomena.
Therefore, for symptoms such as gastrointestinal bleeding, obstruction of exhaust or defecation, and abdominal distension, you should go to the hospital as soon as possible and improve relevant examinations.