Colon cancer in individuals can be present for several years before any symptoms appear. These can vary according to where the tumor is located in the large intestine. For instance, since the right colon is larger and more flexible than the rest of colon, cancers in this part can develop to relatively large sizes before any abdominal symptoms are noticed.
On the other hand, the left colon being much narrower than its right counterpart can develop tumors that are more likely to cause partial or complete obstruction of the bowel. In either case, symptoms are typically associated with digestive discomfort and can appear very nonspecific in nature.
Under normal circumstances, constipation may typically be an indication that the body is in need of some dietary or exercise modifications. However, in the case of colon cancer, the same can be indicative of an unusual obstruction in the colon.
This is because in the beginning of the colon, waste material is typically slushy and can easily move around anything that gets in its way. But towards the end of the colon, it solidifies into stool and can be hindered by any protruding obstacles. A tumor that develops in the far end of the colon can make it very difficult for waste to get by, resulting in constipation.