Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lip and Oral Cavity Cancer ?
    ### Response:
    Key Points
                    - Lip and oral cavity cancer is a disease in which malignant (cancer) cells form in the lips or mouth.    - Tobacco and alcohol use can affect the risk of lip and oral cavity cancer.     - Signs of lip and oral cavity cancer include a sore or lump on the lips or in the mouth.
    