What Kind of Abdominal Pain Indicates Colon Cancer?

Abdominal pain caused by colon cancer is often not specific, and the location of the pain varies depending on where the tumor is situated. For example, rectal cancer typically causes lower abdominal discomfort or a feeling of pressure around the anus. Sigmoid colon cancer usually results in pain in the lower left side of the abdomen, while ascending colon cancer leads to discomfort on the right side of the abdomen. The pain is generally dull and persistent, characterized as chronic rather than acute.

Colon cancer may also present symptoms beyond abdominal pain. In cases of ascending colon cancer, a lump might be felt on the right side of the abdomen. If the tumor has grown significantly or been present for a long time, patients may experience fatigue, unexplained weight loss, and anemia—signs of systemic involvement.

Rectal bleeding is another key symptom of colon cancer. This may appear as small amounts of blood on toilet paper after a bowel movement, or more severely, as dripping blood or even black, tarry stools, which indicate bleeding in the digestive tract.

Changes in bowel habits are also significant indicators. These include increased frequency of bowel movements, a persistent sensation of incomplete evacuation (known as tenesmus), and progressive narrowing of the stool. Sometimes, the surface of the stool may show indentations, which can be a sign of a growing tumor pressing from within the intestine.

In summary, while abdominal pain alone is not a definitive sign of colon cancer, it becomes more concerning when accompanied by other warning signs such as unexplained weight loss, anemia, rectal bleeding, or changes in bowel habits. Early detection through awareness and medical screening is crucial for effective treatment.