Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hypopharyngeal Cancer ?
    ### Response:
    Key Points
                    - Hypopharyngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the hypopharynx.    - Use of tobacco products and heavy drinking can affect the risk of developing hypopharyngeal cancer.     - Signs and symptoms of hypopharyngeal cancer include a sore throat and ear pain.
    