Advances and Technical Standards in Neurosurgery

Advances: ? Empty Sella and Benign Intrasellar Cysts (E. de Divitiis, R. Spaziante, L. Stella) ? Profound Arterial Hypotension (MAP GBP 50mm Hg) Induced with Neuroleptanalgesia and Sodium Nitroprusside (Series of 531 Cases). Reference to Vascular Autoregulation Mechanism and Surgery of Vascular Malformations of the Brain (B. Pertuiset, D. Ancri, A. Lienhart) ? Morphological and Biological Basis for the Classification of Brain Tumors. With a Comment on the WHO-Classification 1979 (F. Gullotta) Technical Standards: ? Surgical Treatment of Spondylotic Vertebral Artery Compression (E. Pasztor) ? Reconstructive Surgery of the Head (P. Harris, I. T. Jackson, J. C. McGregor) ? Operative Management of Craniopharyngiomas (A. N. Konovalov)