This volume contains the proceedings of the Second International Symposium on Biology of Brain Tumour. The first Symposium was held in 1979 at Gardonne Riviera, Italy. This meeting was planned in order to coincide with the lOOth Anniversary of the first reported operation for glioma in London on November 25, 1884. Since the first meeting, the field of neuro-oncology has made remarkable progress in understanding both basic and clinical factors of significance to patients with brain tumor. While the earlier meeting dealt to a large extent with clinically oriented studies, this symposium was more heavily weighted toward the biology of brain tumour and improving our understanding at the physiologic, biochemical, pharmacologic, and cellular level. The meeting was divided according to scientific content into presentations and discussions as well as posters for more leisurely viewing, so as to allow the main themes of the meeting to sequentially develop. The first session dealt extensively with neuro-oncology at the molecular level and included considerable discus sion of material related to the babic biochemical milieu in which tumors originate, proliferate, and eventually destroy the brain. Classic neuropathology has been the mainstay of tumor identification and characteriza tion, however, the process of classification has become much more complex. The availability of a variety of new tools has allowed investigation into the validity of the more traditional classification systems as well as the development of newer biologically related concepts.

Neurosurgery o/the Future: Computers and Robots in Clinical Neurosurgical Practice and in Training - a Philosophical Journey into the Future Many present day neurosurgeons believe that they already obtain good results in operative surgery with the benefit of the operating microscope and other aids which have become available in the last three decades and that the introduction of computers and robots to the operating theatre is superfluous. However, it is clear from analogy with the function of the airline pilot, another profession where there are great demands on manual skill and on spatial awareness, that these devices do have much to offer neurosurgery. Classical neurosurgery, in the time of Cushing, Dandy and Scarff, was based on a three dimensional picture of the patient's brain formed in the surgeon's mind and often illustrated in elegant drawings. Such pictures were based on neuroradiological studies by pneumoencephalography, ventriculography or by angiography. Generally these stud ies showed the presence and position of a lesion by displacement of normal brain structures and the picture was built up by interference. This was then converted by the experienced neurosurgeon into a plan for the craniotomy site and the trajectory of the surgical approach. Once the brain was exposed further pre-operative information was obtained by visual inspection and by palpation with the brain needle. These classical forms ofneuroradiology have largely been superseded by computerised tomography and by magnetic resonance imaging."

This volume covers, in a logical sequence, the brain neuroscience which underpins current management of malignant brain tumours. Cellular and molecular studies are considered, as well as current concepts of histopathological classification and grading. The clinical manifestations and natural history of these tumours is set in context by a discussion of the pathophysiology of intracranial mass lesions. Special attention is given to low-grade and childhood tumours. The more common cerebral gliomas and cerebral metastases are also examined. Diagnostic imaging methods are described and the differential diagnosis of benign and malignant tumours is explored. The final chapters are devoted to conventional and innovative methods, along with the results, of treatment by surgery, radiation, chemotherapy and immunotherapy.

This volume contains the proceedings of the Second International Symposium on Biology of Brain Tumour. The first Symposium was held in 1979 at Gardonne Riviera, Italy. This meeting was planned in order to coincide with the lOOth Anniversary of the first reported operation for glioma in London on November 25, 1884. Since the first meeting, the field of neuro-oncology has made remarkable progress in understanding both basic and clinical factors of significance to patients with brain tumor. While the earlier meeting dealt to a large extent with clinically oriented studies, this symposium was more heavily weighted toward the biology of brain tumour and improving our understanding at the physiologic, biochemical, pharmacologic, and cellular level. The meeting was divided according to scientific content into presentations and discussions as well as posters for more leisurely viewing, so as to allow the main themes of the meeting to sequentially develop. The first session dealt extensively with neuro-oncology at the molecular level and included considerable discus sion of material related to the babic biochemical milieu in which tumors originate, proliferate, and eventually destroy the brain. Classic neuropathology has been the mainstay of tumor identification and characteriza tion, however, the process of classification has become much more complex. The availability of a variety of new tools has allowed investigation into the validity of the more traditional classification systems as well as the development of newer biologically related concepts."