Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Urethral Cancer ?
    ### Response:
    Key Points
                    - Urethral cancer is a disease in which malignant (cancer) cells form in the tissues of the urethra.    - There are different types of urethral cancer that begin in cells that line the urethra.     - A history of bladder cancer can affect the risk of urethral cancer.
    