Breast Cancer in Lymphoma Survivors

Non-Hodgkin lymphoma (NHL) is the most common hematologic malignancy in the world [1]. It is more common in developed countries, with an estimated 70,800 new cases in the United States (US) in 2014. Accounting for 4.3% of all cancers in the US, NHL ranks as the seventh most common cancer among males and the sixth most common cancer among females. NHL consists of more than 40 major subtypes with distinct genetic, morphologic, and clinical features. The incidence of NHL subtypes also varies by age, sex, ethnicity, and geographic region [2, 3]. Hodgkin lymphoma (HL) affects approximately 9050 new patients in the US each year [4], representing approximately 11.2% of all lymphomas. The disease has a bimodal distribution with an increased incidence in young adults as well as in patients 55 years and older [5].