Colorectal cancer is a malignant tumor arising from the inner wall of the large intestine.
Colorectal cancer is the third leading cause of cancer in males and fourth in females in the U.S.
Risk factors for colorectal cancer include heredity, colon polyps, and long-standing ulcerative colitis.
Most colorectal cancers develop from polyps. Removal of colon polyps can prevent colorectal cancer.
Colon polyps and early cancer can have no symptoms. Therefore regular screening is important.
Diagnosis of colorectal cancer can be made by barium enema or by colonoscopy with biopsy confirmation...