Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Lung Cancer ?
    ### Response:
    Doctors can perform several tests to stage lung cancer. Staging means finding out how far the cancer has progressed. The following tests are used to stage lung cancer: - Computerized tomography or CAT scan is a computer linked to an x-ray machine that creates a series of detailed pictures of areas inside the body.
    