Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Lip and Oral Cavity Cancer ?
    ### Response:
    Tests that examine the mouth and throat are used to detect (find), diagnose, and stage lip and oral cavity cancer. The following tests and procedures may be used:         -   Physical exam of the lips and oral cavity: An exam to check the lips and oral cavity for abnormal areas.
    