Colon Cancer - Family History

If you have a family history of colon cancer, at what age did you get a colonoscopy? What was the result?

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Family history of colorectal cancer

Colorectal cancer may run in families. Colon cancer risk to an individual is even higher if more than one immediate family member (parents, siblings or children) has had colorectal cancer, and/or the family member developed the cancer at a young age (less than 55). Under these circumstances, it is recommended that individuals undergo a colonoscopy every three years starting at an age that is 7-10 years younger than the age at which the family member who developed colorectal cancer at the youngest age developed his or her cancer.

If only one immediate family member developed colorectal cancer at an advanced age, the colon cancer risk to the individual is still higher than average but not as high as if two immediate family members developed colorectal cancer or if a family member developed colorectal cancer at an early age. Whether and when to perform screening colonoscopies in these individuals are best decided jointly by the individuals and their doctors.

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