Epidemiology and clinico-demographic characteristics of DLBCL in the Novosibirsk city

Background. The annual reporting forms for malignant neoplasms do not provide for the division of lymphomas into variants. In international publications and statistical reference books of the Russian Federation, variants of non-Hodgkin's lymphomas (NHL) are also not separated. For these reasons, a detailed assessment of the epidemiology of NHL in Russia is difficult, and data for individual variants of the disease are not provided. Purpose: to present the clinical and epidemiological characteristics of Diffuse Large B-cell Lymphoma (DLBCL) in Novosibirsk according to the data of the City Hematology Center (CHC). Material and Methods. A retrospective analysis of primary medical documentation (case histories, outpatient charts, and immunohistochemical study reports) of 271 patients with DLBCL was performed in the period from January 1, 2013 to December 31, 2018. Results. The calculated registered primary morbidity and mortality from DLBCL in Novosibirsk for the analyzed years fluctuated slightly. The average incidence and mortality rates were 2.85 and 1.98 per 100,000 population, respectively. When analyzing the dynamics of the prevalence of DLBCL in Novosibirsk, a positive trend of annual increase in the indicator was revealed: 1.87 times over the past 6 years. In men, the tumor developed 2.6 years earlier than in women. In General, the risk of getting DLBCL after 50 years was 3 times higher than at the age of 30 years. Among patients diagnosed with primary lymphoma who underwent treatment at the Hematology department of CHC, half of the patients had DLBCL. Evaluation of the clinical characteristics showed a pronounced severity of the analyzed cohort. Conclusion. The updated quantitative and qualitative indicators of clinical and epidemiological characteristics of DLBCL in Novosibirsk for 2013-18 were obtained. These indicators can be used for further monitoring, development and implementation of measures for the prevention, diagnosis and treatment of this form of hemoblastosis.