High prevalence of non-Hodgkin's lymphomas in Polish population--1106 new cases diagnosed according to WHO classification in only one district.

The authors present the true incidence of non-Hodgkin's lymphomas basing on the cases diagnosed in Małopolska district during one-year period. The data point to higher lymphoma morbidity than the incidence of them reported by National Cancer Register. Noteworthy is also the distribution of lymphoma types in Polish population being different from that one reported in majority of other Europe countries. The present report indicate the lymphomas become growing diagnostic and clinical challenge, as they place among the most frequent neoplasms in population.