Classification of Brain Tumours / Die Klassifikation Der Hirntumoren : Report of the International Symposium at Cologne 30th August — 1st September 1961 / Bericht Über Das Internationale Symposion in Köln Vom 30. August Bis 1. September 1961

The report which follows constitutes the proceedings of a sym­ posium on the classification of brain tumours held in Cologne in 1961. It contains the contributions and discussions reported as far' as possible in a word-for-word manner, in the hope not only of providing out of the thoughts of the participants stimulation for further research, but also to indicate the atmosphere which prevailed during the symposium in which many completely opposed views were able to be expressed without any feeling of embarrassment. This freedom of expression is already obvious in the discussion of a proposed classification of brain tumours for the Unio Internationalis Contra Cancrum (UICC). The symposium endeavoured here to pro­ duce a positive criticism in order to arrive at a significant and practical conclusion viz a general, internationally acceptable classi­ fication. It was necessary to accept a degree of compromise even if the classification suggested did not in every point correspond to all the personal views of the various participants. The second part of the symposium was concerned with a critical discussion of numerous brain tumour problems, for example the scientific delineation of tumour groups; the discussion was started by general reviews on the biology of brain tumours so that the later discussion could cover as wide a ground as possibly. Here also we all felt that a great stimulus for future work arose from the discussion. Front Matter....Pages II-X Introduction....Pages 1-2 The Classification of Brain Tumours....Pages 3-4 The Nomenclature of Tumours of the Nervous System....Pages 5-23 Genetics the Genetics of Cerebral Tumours....Pages 24-29 Cerebral Tumours in Animals a Comparative Study of Neoplasms of the Central Nervous System in Animals....Pages 30-45 Experimental Production of Brain Tumours Experimental Induction and Transplantation of Brain Tumors in Animals....Pages 46-56 Morphology of Experimental Brain Tumours....Pages 57-67 Tissue Culture Tissue Culture and the Classification of Brain Tumours....Pages 68-74 Electron Microscopy Remarks on the Electronmicroscopical Appearances of Brain Tumours....Pages 75-79 Histochemistry Remarks on the Histochemistry of Brain Tumours....Pages 80-84 Metallic Impregnation Observations on the Metallic Impregnations of Brain Tumours....Pages 85-97 The System of Grading of Gliomas....Pages 98-116 Grading of Malignancy of Brain Tumours....Pages 117-120 Some Remarks on the Spongioblastoma of the Brain....Pages 121-125 Discussion on Polar Spongioblastomas....Pages 126-140 Morphological Problems of Brain Tumors with Mixed Cell Population....Pages 141-165 On the Definition of the Polymorphous Oligodendroglioma....Pages 166-172 Oligodendrogliomas in Animals....Pages 173-184 Primary Sarcomas of the Brain....Pages 185-185 On the Primary Sarcomas of the Brain....Pages 186-189 The Classification and Diagnosis of Intracranial Sarcomas....Pages 190-200 Microgliomatosis....Pages 201-217 Back Matter....Pages 218-218