Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) AIDS-Related Lymphoma ?
    ### Response:
    Key Points
                    - AIDS-related lymphoma is a disease in which malignant (cancer) cells form in the lymph system of patients who have acquired immunodeficiency syndrome (AIDS).    - There are many different types of lymphoma.    - Signs of AIDS-related lymphoma include weight loss, fever, and night sweats.
    