I don’t know about you, but whenever I think of March, the first thought that springs to mind is National Colorectal Cancer Awareness Month. Patients frequently ask me to be tested for whichever cancer they are particularly anxious about.  “Is there a test to make sure I don’t have early ovarian cancer?”  “Pancreatic cancer?”  “Lymphoma?”  I have to explain that for healthy people without any symptoms, there is no test that has been proven to find these malignancies early or save lives by findi...