Hodgkin lymphoma is a type of lymphoma characterized by the presence of Reed-Sternberg cells. It was first described in 1832 and can now be successfully treated with radiation or chemotherapy. The malignant cell is a B cell that has lost expression of normal B cell markers. Molecular changes contribute to uncontrolled growth and proliferation. Risk factors include EBV infection, HIV, and family history. Histologically, Reed-Sternberg cells are identified within an inflammatory background. Staging involves PET scans, bone marrow biopsy, and the Ann Arbor system. Treatment involves chemotherapy such as ABVD or radiation therapy to involved sites.