There appear to be some differences between the patterns of brain tumor epidemiology in Iran and westerncountries. Thus, the prevalence of glioma was earlier estimated to be about 45% of all brain tumors, somewhatlow in comparison to the western reports at that time, but almost the same as in Southeast Asian countries. Asimilar low figure was also obtained more recently indicating that the earlier estimate was not simply due to thelack of medical facilities resulting in under-reporting of this particularly malignant form of cancer. There mayalso be differences regarding incidences of central nervous system (CNS) tumors in females between Iran andWestern countries. Clearly this is an area which deserves epidemiological research.
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