By JIM STOMMEN, Medical Device Daily Contributing Writer  The arguments going on these days over the prostate cancer screening test known as prostate-specific antigen (PSA for short) might make one think that there’s something wrong with the test itself. Not so. The argument by what we will refer to as the “anti” side of the issue is with what happens after the routine blood test comes back with a positive finding. Those folks, who go by the name U.S. Preventive Services Task Force, maintain that the PSA test leads to demonstrative levels of over-treatment, doing so to such an extent...