I have just spent a delightful two weeks with my sister, Joy. Joy is the strong, energetic type who enjoyed a daily run before starting her teaching job. She had recovered well from a total mastectomy due to breast cancer twenty three years ago, and for the last two years had been having regular check ups for polyps in the bowel.
While running early one morning, she noted her foot was hurting. It was still troubling her several days later, so she decided to make an appointment with her doctor. The doctor examined her foot and suggested it would be a good idea to have a routine blood test.