Bowel cancer, also known as colorectal cancer, develops from the inner lining of the bowel and is usually preceded by growths called polyps, which may become invasive cancer if undetected. Depending on where the cancer begins, bowel cancer may be called colon or rectal cancer. In 2016, 15,352 new cases of bowel cancer were diagnosed in Australia.

https://www.cancer.org.au/cancer-information/types-of-cancer/bowel-cancer