The aim of this update was to have a definitive text by authorities in their field which will give the read the state of the art information in a concise manner. This multi author CPIN has contribution from leaders in Neurosurgery. The edition is divided into four Units – 1) Neuro Oncology, 2) Cerebrovascular 3) Skull Base Surgery 4) Fuctional Problems, Infection and Recent Advances. The book will be useful to the Neurosurgeon seeking knowledge and confidence to close the gap between best intentions and actual performance in managing various challenging neurosurgical problems.