“…13 In European children, there was an increasing trend in general, but this only occurred in the southern and western regions of Europe. 19 Data from our study showed a decreasing trend, and in a more detailed study of lymphomas that was performed by our group, the mixed cellularity subtype decreased in Hodgkin's lymphomas; non-Hodgkin's lymphomas also displayed a decreasing trend, particularly in the unspecified types, which was identified as an improvement in the histopathological diagnosis in recent years. 20 In relation to mortality exclusively, which, as mentioned, is related to the overall efficacy of treatment that is being administered to the population, 6,21 only the data from the period of 2003-2013 should be considered because during this period, the incidence was stable and it could be verified that the incidence differed from what occurred in developed countries, where the cancer mortality in children decreased.…”