The introduction of modern neuro-imaging techniques, as well as various environmental factors, have been changing the incidence and the proportions of the types of clinically diagnosed intracranial tumors. The aim of this study was to determine recent trends in the occurrence of primary intracranial tumors in the residents of Kumamoto Prefecture, Japan.
Department of Neurosurgery, Faculty of Medicine, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan. jkuratsu@m3.kufm.kagoshima-u.ac.jp