History of WHO classification on brain tumors: Review.

Abstract

The WHO classification of the brain tumors is used widely all over the world, and is helpful for the diagnosis, treatment, and research on brain tumors. The first edition of the WHO classification was published in 1979. Thereafter, revised editions werepublished in 1993, 2000, and 2007. The purpose of this review is to clarify the history of the WHO classification of the brain tumors.