[Incidence of neoplasms of the hematopoietic and lymphoreticular systems in the Lower Silesia. III. Neoplasms of the lymphoreticular system in various provinces].

The incidence of lymphomas (Hodgkin's disease, non-Hodgkin lymphoma), chronic lymphatic leukaemia was compared in four provinces in Lower Silesia. The highest incidence was in the Province of Wrocław, followed in decreasing order by Legnica, Wałbrzych and Jelenia Góra. The mean annual crude index of the incidence of these diseases was in these provinces respectively: Hodgkin's disease: 2.51; 1.94; 2.46; 1.65. Non-Hodgkin lymphoma: 1.72; 1.63; 1.68; 1.66. Chronic lymphocytic leukaemia: 2.10; 1.86; 1.28 and 1.62. The highest increasing trend in this incidence was noted in the province of Legnica and the Province of Wrocław, and in these provinces the prognosis for future increase was worst. In the Province of Legnica the highest increasing tendency of non-Hodgkin lymphoma was noted. The much higher incidence of these malignancies in Lower Silesia in relation to the whole country suggests that some factors there may increase the susceptibility to this disease. However, in relation to other countries, this incidence is within the range of moderate values.