Please note: This exhibit may be out of date, please visit our new Genetics online exhibit.

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You are the Doctor.
Your patient has a family history of colon cancer. Physical examinations indicate that she does not have the cancer. Nevertheless, your patient is still worried and requests genetic tests. The results of the test indicate that there is a 15% chance your patient will develop colon cancer in the next twenty years. It is your job to advise your patient. You do not want to alarm your patient about these inconclusive results. Do you tell her that she is at risk?