Really, the only one who can explain this would be the urologist. Do you have a copy of the path report? You should, and if you don't, ask for one for your records. Did the path report state that the tumor was "urothelial transitional cell carcinoma?" That is the most common type of bladder cancer that arises from the urothelial cells in the bladder lining and sometimes in the lining of tissues leading to the kidneys.
IF your diagnosis is indeed "wierd", "Abnormal" and "bizarre," you need to get a second opinion at a major cancer center that specializes in bladder cancer so that you can be sure that the treatment recommendations are exactly what is needed in your case. If you are not at such a place, let us know where you are located and maybe someone can suggest a place. Or, use our Treatment Finder on our home page.
Sara Anne