Abstract
Abstract Introduction/Objective Concurrent diagnosis of chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) and Hodgkin lymphoma (HL) is rare. CLL/SLL can rarely advance into Hodgkin-variant of Richter transformation, or there can be a simultaneous presence of separate CLL/SLL and HL from different clonal origins. Due to its rarity, the epidemiological features and outcome of concurrent CLL and HL are not well-known. Here we have used the National Cancer Institute’s Surveillance, Epidemiology, and End Results (SEER) database to identify concurrent CLL/SLL and HL cases and analyzed overall and disease-specific survival across various epidemiological factors. Methods/Case Report We identified all patients diagnosed with CLL/SLL and HL between the period of 1975 to 2017. Next, we identified the patients with a simultaneous CLL/SLL and HL diagnosis by matching the patient identification number. Overall survival and disease-specific survival were calculated using Kaplan-Meier curves and Cox proportional hazards models. Results (if a Case Study enter NA) We identified 166 cases with a concurrent diagnosis of CLL, and HL. 4 cases were excluded from analysis as the diagnosis of CLL and HL were not simultaneous. The age distribution of the patient showed a unimodal distribution, with most patients being diagnosed between the age of 50 and 79. 67% of patients were male, and 92% of patients were Caucasian. The majority of the CLL was diagnosed in bone marrow or lymph nodes, while almost all HL were diagnosed in lymph nodes. Both disease-specific and overall survival were worse for patients with the advanced age of diagnosis. Race or sex did not significantly affect patients’ survival. Conclusion Our comprehensive review of clinical and epidemiological features of concurrent CLL and HL cases shows that the age of diagnosis is the most significant factor in determining the survival of these patients.
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