[Primary tumors of the nervous system in the light of an epidemiologic analysis]

On a territory of 5 districts of western Poland with 3.097 thousands of inhabitants the annual incidence rates per 100 thousands of population as well as the prevalence rates of primary neoplasms have been determined. The results of our investigation have shown that multiforme glioblastomas and astrocytomas occurred in the investigated population with the highest annual incidence rates, whereas the highest prevalence rates were found for hypophyseal adenomas, to be followed by astrocytomas, meningiomas and glioblastoma multiforme. The obtained results are critically discussed and compared with epidemiological data presented by other authors who based on records from neurosurgical departments and autoptic sections, it is concluded that the presented results do reflect objectively the epidemiological situation of Poland.