Hodgkin Lymphoma
Rima Koka, M.D., Ph.D.
Amy Duffield, M.D., Ph.D.
General
The two distinct branches of Hodgkin lymphoma are nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) and classical Hodgkin lymphoma (CHL). While NLPHL occurs primarily in males within the 30- to 50-year age group, CHL has a bimodal age distribution with the first peak occurring at 15 to 35 years of age and the second peak occurring around the seventh decade of life. There is a slight male predominance in CHL. A common presenting complaint is peripheral lymphadenopathy, although the nodular sclerosis subtype of CHL is often associated with mediastinal involvement as well. B symptoms, including fever, drenching night sweats, and significant weight loss, are seen in up to 40% of patients.1
Secondary pulmonary involvement, typically presenting as an extension of disease originating in mediastinal and hilar lymph nodes, has been shown to occur in 6% to 12% of patients and is usually the classic nodular sclerosing type.1 Multinodular involvement of the lung is uncommon and indicative of stage IV disease.
Primary pulmonary Hodgkin lymphoma (PPHL) is rare and is thought to arise directly from lung-associated lymphoid tissue.2 Common presenting symptoms included dry cough, fever, or chest pain.3 Due to the nonspecific nature of these symptoms, a delay in diagnosis and treatment may occur.3,4 Most cases are classical nodular sclerosing type,2,3,5,6,7,8 with a few cases of mixed cellularity; other subtypes have not been described as primary in the lung.4