Colon cancer screening

Screening for colon cancer; Colonoscopy - screening; Sigmoidoscopy - screening; Virtual colonoscopy - screening; Fecal immunochemical test; Stool DNA test; sDNA test; Colorectal cancer - screening; Rectal cancer - screening

Colon cancer screening can detect polyps and early cancers in the large intestine. This type of screening can find problems that can be treated before cancer develops or spreads. Regular screenings may reduce the risk for death and complications caused by colorectal cancer.

Colonoscopy

There are 3 basic tests for colon cancer; a stool test (to check for blood), sigmoidoscopy (inspection of the lower colon), and colonoscopy (inspection of the entire colon). All 3 are effective in catching cancers in the early stages, when treatment is most beneficial.

Large intestine anatomy

One of the important jobs of the large intestine is to absorb the remaining water from the food residue passing through the intestines. The residue that is left remains in a semisolid state and is propelled toward the rectum by peristalsis. Through reflexes which are triggered by a full colon, feces is eliminated from the body.

Sigmoid colon cancer - X-ray

A barium enema in a patient with cancer of the large bowel (sigmoid area).

Fecal occult blood test

A fecal occult blood test is a noninvasive test that detects the presence of hidden blood in the stool. Blood in the stool that is not visible is often the first, and in many cases the only, warning sign that a person has colorectal disease, including colon cancer.

Information