[Incidence of neoplasms of the hematologic and lymphoreticular systems in Lower Silesia 1972-1985. I. Incidence in the entire region].

On the basis of data obtained from hospitals and outpatient clinics in Lower Silesia the incidence of haematological malignancies was analysed in the years 1972-1985. Totally 3739 cases were notified, mainly in urban populations. The mean annual index of incidence of leukaemias and lymphoproliferative disorders was in men 4.57/100,000 population, and in women 3.79, while the incidence index of chronic lymphoreticular system malignancies was 6.91 in men and 4.5 in women. With the exception of acute myeloid leukemia an increasing trend of incidence was noted, which was slight for Hodgkin's disease, chronic myeloid leukaemia and polycythaemia vera, and highest for non-Hodgkin lymphoma. About 30% of haematological malignancy cases have not been notified, and perhaps this was due to inadequate terminology of these diseases in the international register.