A second TURB should be done if there is any question raised by the results of the first or if there were extensive
tumors. It is not always necessary. In my case, the first one showed low grade papillary tumors, but the path report also noted "areas of irritation." My urologist chose to do a second TURB and concentrate on these uncertain areas. Turned out they were CIS which is high grade. I am so grateful that he did!!!
As for the statistics and BCG, you can find pretty much any number you want!!! I have usually read about 70%.
As you can see, it is well worth doing.
Sara Anne