3. Patients must have undergone a re-resection (second TURB in accordance with the EAU Guidelines) (i) if the initial TURB was incomplete (ii) if there was no muscle in the specimen after the initial TURB (except in TaG1/LG tumours) (iii) in all T1 and all G3/HG tumours TURB of T1 sites must include muscle. Re-resection must be negative in patients diagnosed with T1 and/or G3/HG and/or multiple tumours in the initial TURB.