- Must have an adequately functioning bladder as judged by the participating urologist and radiation oncologist and have undergone a visibly complete re-staging TURBT by the participating urologist that shows (or is present on the outside pathology specimen) a T1G2 or T1G3 tumor with uninvolved muscularis propria in the specimen and, if on prostatic urethral biopsy mucosal carcinoma is present, there is no evidence on biopsy in the prostatic stroma of tumor invasion