Colorectal cancer (colon cancer / rectal cancer / bowel cancer) is a common cancer affecting the colon or rectum (parts of the large intestine) or in the appendix. It is from uncontrolled cell growth in the colon or rectum. Colorectal cancer may be preventable in patients who undergo routine screening and is often curable when detected early. If not detected and treated early, colorectal cancer may seep through the regional lymph nodes, liver, lung or upper abdomen.
Symptoms of colorectal cancer typically include rectal bleeding and anemia which are sometimes associated with weight loss and changes in bowel habits.
About three quarters of colorectal cancer occurs due to lifestyle, diet and increasing age with only a quarter minority of cases associated with underlying genetic disorders. Screening is effective at decreasing the chance of dying from colorectal cancer and is recommended starting at the age of 50 and continuing until a person is 75 years old. Localized bowel cancer is usually diagnosed through colonoscopy.
- Age (> 50 Years)
- Previous colorectal cancer
- Previous colorectal lumps or cysts
- Inflammatory bowel disease (especially ulcerative colitis)
- Family history of colorectal cancer
- Diet high in animal fat (meat and dairy products)
- Physical inactivity
- Cigarette smoking and heavy alcohol intake