Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Adult Primary Liver Cancer ?
    ### Response:
    Key Points
                    - Adult primary liver cancer is a disease in which malignant (cancer) cells form in the tissues of the liver.    - There are two types of adult primary liver cancer.    - Having hepatitis or cirrhosis can affect the risk of adult primary liver cancer.
    