My father had colon cancer in 2004, I in 2003 and my younger sister in 2002, at ages 83, 58 and 51 respectively, all stage 2 colon cancer, operated on detection. Genetic blood tests confirmed the presence of Hereditary non-polyposis colorectal cancer (HNPCC). Please guide in what precautions and surveillance I need to take for my children. How reliable is genetic blood testing for children and which are the best centers for testing?
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