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W pracy dokonano analizy przestrzennej i czasowej zmiany współczynnika surowego zachorowalności na nowotwory złośliwe ośrodkowego układu nerwowego (z uwzględnieniem opon mózgowo-rdzeniowych), określono charakter i siłę trendów zachorowalności oraz wskazano obszary o niekorzystnej i korzystnej sytuacji.
Niekorzystna sytuacja w zakresie zachorowalności surowej na analizowane nowotwory występowała w podregionie miasto Poznań, podregionie kaliskim oraz w powiecie pilskim. W województwie wielkopolskim istotne statystycznie trendy wzrostowe zachorowalności odnotowano dla "nowotworu złośliwego opon mózgowo-rdzeniowych (C70)" oraz "nowotworu złośliwego mózgu (C71)". Jedyny istotny statystycznie trend spadkowy zachorowalności wystąpił w podregionie pilskim i dotyczył "nowotworu złośliwego rdzenia kręgowego, nerwów czaszkowych i innych części ośrodkowego układu nerwowego (C72)".

The work analyses and evaluates the results of research work carried out so far in the field of rainwater management in urban areas in Poland. Using the "biblioshiny" tool, a bibliometric analysis was carried out based on queries to the Scopus and Web of Science databases. As a result, information was obtained on selected bibliometric statistics of scientific publications in which the topic of rainwater in Poland was taken up. The probable direction of further research development in the field of the analysed issues was also determined. In addition, after a detailed review of all the articles obtained at the earlier stage of the bibliometric analysis, the main research contexts were indicated and discussed. Areas and issues requiring further analysis and supplementation were indicated in the work.

Abstract
The following study identifies areas where adverse conditions related to benzene pollution are concurrent with leukaemia incidence and mortality (C91–C95). Moreover, it determines the similarities between benzene and leukaemia levels, as well and rules defining their co-occurrence. The analysis covered the period of 2015–2017. Data were obtained from Dane.gov.pl (number of leukaemia cases), the Polish National Cancer Registry website (number of deaths), the Local Data Bank of the Central Statistical Office (population data) and the Chief Inspectorate of Environmental Protection and the Air Quality Portal (data on air quality). Based on the conducted analysis, it was concluded that the following poviat towns have an unfavourable epidemic situation related to leukaemia: Kielce (incidence), Rzeszów (incidence), Elbląg (mortality); meanwhile, high leukaemia incidence and mortality co-occurred with high average benzene concentration in 2015–2017 in the following poviat towns: Kielce, Rybnik, Płock and Rzeszów. It was found that leukaemias belonging to the three-character ICD-10 categories C94, C95 and C92 show the highest rate of co-occurrence with benzene concentration. In addition, two main rules for the co-occurrence of benzene pollution and leukaemia were identified. It was also noted that it is necessary to continue the research for a longer time period, especially in the poviat towns of Kielce and Rzeszów.