General population: If grand parent colon cancer is not genetically related cancer of colon, then incidence will be same as general population.
Answered 10/15/2012
5.9k views
Unknown: The health history of all of your relatives would be helpful. You should be seen by your doctor and should probably have a colonoscopy before the recommended age of 50 due to your family history. If, after obtaining your family history, you may be recommended to be tested for a hereditary predisposition to colon and other cancers.
Answered 4/25/2012
5.9k views
Low: While there are a number of genetic syndromes that involve colon cancers, they typically involve 2 or more family members before there is meaningful concern for a genetic syndrome. These can be investigated by blood tests.
Answered 6/9/2013
5.9k views
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