Ans:  According to the Centers for Disease Control and Prevention, colorectal cancer occurs when cells in the colon or rectum start to multiply uncontrollably. It's often referred to simply as colon cancer. The colon, also known as the large intestine or bowel, and the rectum, which is the conduit linking the colon to the anus, are the primary sites affected by this disease. Screening tests are conducted to detect a disease before symptoms appear. Colorectal cancer typically originates from precancerous polyps within the colon or rectum. Through screening, these precancerous polyps can be identified and removed before they develop into cancer. Additionally, screening enables the early detection of colorectal cancer at a stage where treatments are most effective.
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