This is usually performed in the urologist's office with local anesthesia. The stricture is stretched using larger and larger dilators called "sounds." A special balloon on a catheter can also stretch the tissue. But this stretching is not really a cure and needs to be repeated regularly. If the stricture comes back too quickly, you may be taught how to insert a catheter from time to time to prevent it from coming back. Side effects include bleeding and infection. Sometimes a "false passage" or second urethral channel may form from the stretching.