State of the Russian Oncology Service: malignant neoplasms of the tongue C01, 02 (mortality rate and median survival of patients, taking into account the stage of the disease and histological structure of the tumor) Part 2

Abstract

Malignant neoplasms of the tongue occupy 0.55% in the general structure of the cancer incidence in Russian population. No information on other parameters (the number of deaths, mortality of patients, their distribution by stages of the disease and other analytical indicators) is provided in the official reporting.
 The opportunity appeared only with the development of Population-based Cancer Registries (PCR) system, but this wealth of material is not used for the official reporting.
 Tongue cancer is a visual localization with a high mortality rate, which requires special attention.
 The study was conducted to investigate the state of Russian Oncology Service for tongue cancer patients with the calculations of one-year mortality rate, annual mortality rate, median survival, 1,3,5-year observed and relative survival rates, first time in Russia, at the level of the newly created Population-based Cancer Registry of the Federal District.
 In Russia, there has been little research on the analysis of the cancer survival rate at the population level. We have been conducting developments for all malignant tumors localizations since 2000 based on the St. Petersburg PCR database. The level of 5-year observed and relative survival rates for tongue cancer patients in Russia (St. Petersburg and the NWFD RF) has been found to be significantly lower than the EU average (Eurocare-4). To carry out this study, 5188 observations from the NWFD RF PCR database were selected. It has been established that during 4 periods of observation, the mortality rate for tongue cancer patients during the first year of observation in the NWFD RF has decreased under the C01 rubric (cancer of the base of the tongue) from 58.5 to 45.8%; and under the C02 rubric (malignant neoplasm of other and unspecified parts of tongue) from 54.5 to 42.7%. The five-year survival rate for tongue cancer patients has increased by 23.3%.