Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Childhood Liver Cancer ?
    ### Response:
    Tests that examine the liver and the blood are used to detect (find) and diagnose childhood liver cancer and find out whether the cancer has spread. The following tests and procedures may be used:         -   Physical exam and history : An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual.
    