Brain Tumors

The classification of brain tumors has had a long history. Both general pathology and neurosurgery have influenced the description and classification of tumors of the nervous system. Whereas neurosurgery attempts to “classify” tumors for practical reasons, pathology offer general rules for doing so. Early attempts were made on the histogenetic level due to the collaboration between Percival Bailey and Harvey Cushing, but the emphasis was soon changed to the outcome of the patients. Thus, the prognosis has been one of the leading viewpoints of classification since the beginning [1].