State of oncological care in Russia: bladder cancer (С67). Incidence, quality of patient followup, annual mortality. Part I

Background. Bladder cancer (С67) remains a serious problem of modern medicine without an established system of active detection. Among male population, bladder cancer is close to such malignant neoplasms as kidney cancer and systemic neoplasms of the lymphatic and hematopoietic tissues, while among female population to oral and brain neoplasms. In terms of 5-year cumulative, observed and relative survival bladder cancer is similar to malignant tumors of the parotid gland (С07) and leukemias (С91–96). Bladder cancer has a higher tendency to recurrence and progression.Aim. To study for the first time on population level current dynamics of morbidity, mortality, accuracy of registering of patients with bladder cancer in Russia and to evaluate specifics of annual mortality of the patients based on the Population Cancer Registry (PCR) database of the Northwestern Federal District of the Russian Federation (NWFD RF).Materials and methods. Materials of the International Agency for the Research on Cancer, P.A. Herzen Moscow Oncology Research Institute and N.N. Petrov National Medical Research Center of Oncology reference books were used. Detailed characteristics of the analytical values were established based on the NWFD RF PCR database. For calculation of annual bladder cancer mortality, 27,431 observations were selected from the PCR database.Results and conclusion. The study allowed to determine the specifics of bladder cancer morbidity in the world, Russia, and NWFD RF, establish age characteristics of the registered bladder cancer cases. Dynamics of bladder cancer morbidity and mortality in Russia and NWFD RF were demonstrated. The negative effect of COVID-19 pandemic was observed. Positive dynamics in mortality and quality of follow-up for patients with bladder cancer were shown. Based in the PCR NWFD RF database, specifics of annual mortality of patients with bladder cancer were determined.