Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Salivary Gland Cancer ?
    ### Response:
    Signs of salivary gland cancer include a lump or trouble swallowing. Salivary gland cancer may not cause any symptoms. It may be found during a regular dental check-up or physical exam. Signs and symptoms may be caused by salivary gland cancer or by other conditions.
    