RT Book, Section A1 Chihara, Dai A1 Hagemeister, Fredrick B. A1 Medeiros, L. Jeffrey A1 Fanale, Michelle A. A2 Kantarjian, Hagop M. A2 Wolff, Robert A. SR Print(0) ID 1126740891 T1 Hodgkin Lymphoma T2 The MD Anderson Manual of Medical Oncology, 3e YR 2016 FD 2016 PB McGraw-Hill Medical PP New York, NY SN 9780071847940 LK accessmedicine.mhmedical.com/content.aspx?aid=1126740891 RD 2024/04/20 AB Hodgkin lymphoma (HL) was recognized in the first half of the nineteenth century by Thomas Hodgkin and Samuel Wilks (1). HL usually arises in lymph nodes, preferentially in the cervical area, and the majority of HLs manifest clinically in young adults in their third and fourth decades of life. The incidence of HL is 3.0 per 100,000 person-year in the United States; it is higher in the Western countries than Asian countries (2,3). Biological and clinical studies have shown that HLs are comprised of two disease entities: nodular lymphocyte-predominant HL (NLPHL) and classical HL (cHL) (1). The two entities differ in their clinical features and behavior. Within cHL, four subtypes have been described: nodular sclerosis, mixed cellularity, lymphocyte-rich, and lymphocyte-depleted. These four subtypes differ in their clinical features, growth pattern, presence of fibrosis, and frequency of Epstein-Barr virus infection but share the immunophenotype of tumor cells.