Signs and symptoms[ edit ] Location and appearance of two example colorectal tumors The signs and symptoms of colorectal cancer depend on the location of the tumor in the boweland whether it has spread elsewhere in the body metastasis. The classic warning signs include:
What do the colon and rectum do? The colon absorbs water and salt from the remaining food matter after it goes through the small intestine small bowel.
The waste matter that's left after going through the colon goes into the rectum, the final 6 inches of the digestive system.
It's stored there until it passes out of the body through the anus. Ring-shaped sphincter SFINK-ter muscles around the anus keeps stool from coming out until they relax during a bowel movement.
These cancers start in cells that make mucus to lubricate the inside of the colon and rectum. When doctors talk about colorectal cancer, they're almost always talking about this type. Some sub-types of adenocarcinoma, such as signet ring and mucinous, may have a worse prognosis outlook.
Other, much less common types of tumors can start in the colon and rectum, too. These start from special hormone-making cells in the intestine.
They're covered in Gastrointestinal Carcinoid Tumors. Gastrointestinal stromal tumors GISTs start from special cells in the wall of the colon called the interstitial cells of Cajal.
Some are not cancer benign. These tumors can be found anywhere in the digestive tract, but are not common in the colon. Lymphomas are cancers of immune system cells.
They mostly start in lymph nodesbut they can also start in the colon, rectum, or other organs. Information on lymphomas of the digestive system can be found in Non-Hodgkin Lymphoma.
Sarcomas can start in blood vessels, muscle layers, or other connective tissues in the wall of the colon and rectum. Sarcomas of the colon or rectum are rare.Colon cancer can occur in younger people, but it occurs much less frequently.
African-Americans have a greater risk of colon cancer than do people of other races. A personal history of colorectal cancer or polyps.
If you've already had colon cancer or adenomatous polyps, you have a greater risk of colon cancer in the future. Statistics. Colorectal cancer is the third most common cancer in men and women in the United States.
The Data Visualizations Tool provides detailed statistics. Colorectal cancer often begins as a growth called a polyp inside the colon or rectum. Finding and removing polyps can prevent colorectal cancer.
Explore the links on this page to learn more about colorectal cancer prevention, screening, treatment, statistics, research, clinical trials, and more. Colon cancer is a disease in which malignant (cancer) cells form in the tissues of the colon.
Health history affects the risk of developing colon cancer. Signs of colon cancer include blood in the stool or a change in bowel habits. Tests that examine the colon and rectum are used to detect (find.
Colorectal Cancer Overview Colon cancer and cancer of the rectum can begin as a small polyp, detectable through regular cancer screening, such as colonoscopy. Colon cancer symptoms include a change in bowel habits or bleeding, but often there are no symptoms.
Treating Colorectal Cancer. If you are facing colorectal cancer, we can help you learn about the treatment options and possible side effects, and point you to information and services to .