Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Adult Hodgkin Lymphoma ?
    ### Response:
    Key Points
                    - Adult Hodgkin lymphoma is a disease in which malignant (cancer) cells form in the lymph system.    - There are two main types of Hodgkin lymphoma: classical and nodular lymphocyte-predominant.    - Age, gender, and Epstein-Barr infection can affect the risk of adult Hodgkin lymphoma.
    