<b>Purpose:</b> Non-Hodgkin lymphoma (NHL) occurs in patients in all age groups and its incidence in Finland has constantly increased since the 1950s. In this study the change in the incidence rate and the effect of age on the survival of NHL patients was investigated. The aim of the study was to determine the relative survival by age during follow-up through a cancer registry. <b>Patients and Methods:</b> The data base of the Finnish Cancer Registry was used to collect information of all NHL cases registered in Finland in 1960–1992. A total of 2,824 newly diagnosed cases of NHL were included. Of them 1,414 (50%) were diagnosed in men and 1,410 (50%) in women. <b>Results:</b> The age-specific incidence rates in both sexes indicated a significant increase (p < 0.0001) in incidence for patients from 1960 to 1992. The 1- and 5-year relative survival rates were best for patients diagnosed at the age of 40–44 years. During 10 years’ survival two peaks were observed, in the age group of 20–24 and 40–44 years. The relative survival rate was found to deteriorate with an increase in the age of the patients. Patients with local NHL lymphoma had a simila
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