Colon cancer is one of the leading causes of deaths from cancer in the United States. Colon cancer presents with many common symptoms, some of which can last a long time, making an early diagnosis possible. Early detection of colon cancer can significantly improve the survival of colon cancer patients, according to the American Cancer Society, so it's important to be aware of the primary signs of colon cancer.
Rectal Bleeding
Rectal bleeding is a classic symptom of colon cancer, according to a 2004 review published in the journal "Family Practice." Rectal bleeding is also often the first sign of colon cancer, and occurs in 58 percent of colon cancer patients, according to a study published in 1999 in the "American Journal of Gastroenterology." However, rectal bleeding is also a symptom of many other diseases, including inflammatory bowel disease, hemorrhoids and other conditions. If you suffer from frequent rectal bleeding, consult with your physician about testing for colon cancer.
Change in Bowel Movements
Increased loose stools or increased stool frequency is another important sign of colon cancer. Change in bowel movements occurs in 51 percent of colon cancer patients, according to the "American Journal of Gastroenterology" issue cited above.
Abdominal Pain
According to the same study published in the "American Journal of Gastroenterology", abdominal pain occurs in 52 percent of colon cancer patients.
Other Signs
Other important signs of colon cancer include anemia, weight loss, fatigue and obstruction (blocking of feces), according to the above-mentioned study published in the "American Journal of Gastroenterology."
Patients with colon cancer in the right side of the colon are more likely to experience fatigue and anemia, according to the book, "Clinical Oncology."
