What this diagnosis means is that the tissue in the sample was not quite normal....sort of just a bit irregular, but was not showing signs of malignancy. There might be a little irritation of the surface, for example.
The urologist needs to keep a watch on it. In six months, when he does another biopsy, it could be completely normal. He will want to be sure that no malignancy has developed by that time.
Will be keeping fingers crossed for you!
Sara Anne