Colorectal cancer is a type of cancer that starts in a part of the large intestine called the colon. It is sometimes referred to as colon cancer or rectal cancer, depending on where it starts.
The exact cause of colorectal cancer is not known, but it typically develops from polyps in the colon or rectum, which can become cancerous over time. Genetic mutations, both inherited and acquired, can also play a role in the development of colon cancer.
Symptoms can include changes in bowel habits (such as diarrhea or constipation), blood in the stool, abdominal pain or cramping, unexplained weight loss and a feeling that the bowel does not empty completely.
Some cases of colorectal cancer are hereditary, particularly those associated with genetic syndromes like Lynch syndrome or familial adenomatous polyposis (FAP). Family history is an important factor in assessing risk.
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