Klin Onkol 2007; 20(Suppl 1 20): 142-146.

Malignant lymphoma (ML) represents the fifth most common cancer in Western countries. While for most cancers incidence and mortality are decreasing, those in ML are steadily increasing. Research to define reasons for this increase is extensive, but has not yet resolved them. Authors tried to analyze trends in incidence and mortality in various subtypes of ML from the records of Czech National
Cancer Registry (NCR) database. From 1977 to 2002 we found 7.901 cases of Hodgkin’s lymphoma (HL) and 20.395 records of non-Hodgkin’s lymphoma (NHL) in the NCR database. The incidence of HL in monitored period decreased (from 3,1 to 2,7 cases), in NHL there was evident significant increase (from 4,8 to 10,3 cases). The male-to-female predominance was surprisingly low in NHL cases.
The incidence and mortality analysis in various subtypes of NHL was limited due to changes and development of diagnostic and classification approaches. Authors confirmed a necessity of new simple, comprehensible and digitalized reporting way to the NCR database that takes into account WHO classification of lymphoid malignancies.