This volume contains 121 representative works on hydrocephalus which are collected from 24 listed journals and books in the field of neuroscience published in 1988. We express OUf sincere thanks to all authors, listed publishers and editorial boards for their cooperation and permission on this publication. It isour pleasure ifthis book willprovide you with an up-to-date review of the works on hydrocephalus. The editors ACKNOWLEDGMENT Greatful acknowledgments for permission to reproduce copyright material are made to the editors and the publishers listed below: Acta Neurochirurgica: Springer-Verlag, Wien American Journal of Neuroradiology (AJNR): American Roentgen Ray Society American Journal of Psychiatry: The American Psychiatrie Association Archives of Neurology: American Medical Association Brain and Development: (Official Journal) The Japanese Society of Child Neurology Brain Research: Elsevier Science Publishiers B. V. Child's Nervous System: Springer-Verlag, Berlin CT Kenkyu/Progress in Computerized Tomography: Neuron Publishing Co. Journal of Neurology, Neurosurgery and Psychiatry: British Medical Journal Journal of Neurosurgery: The American Association of Neurological Surgeons Journal of Pediatric Neurosciences: Springer-Verlag, Heidelberg Journal of Pediatric Surgery: Grune & Stratton, Inc. Nervenarzt: Springer-Verlag, Berlin Neurologia Medico Chirurgica (Tokyo): (OfficialJournal) The Japan Neurosurgical Society Neurology: Modern Medicine Publications, Inc.