December 29, 2021


In the early stages of colon cancer, no obvious signs or symptoms may have developed. As symptoms develop, they may vary depending on the tumor size and location in the large intestine. Early symptoms may affect only the colon and result in changes in bowel habits. Common local symptoms include constipation, diarrhea, alternating diarrhea, and constipation, or other changes in bowel habits, rectal bleeding, or blood in the stool, abdominal bloating, cramps, or discomfort, a feeling that the bowel doesn’t empty completely, stools that are thinner than normal. As the cancer grows, it may spread, producing systemic symptoms that affect your whole body such as fatigue and weight loss. Systemic colorectal cancer symptoms may impact more than the digestive tract and affect your entire body. Common systemic symptoms of colorectal cancer include unexplained loss of appetite, unexplained weight loss, nausea, vomiting, jaundice, anemia, weakness, and fatigue.