I Importance of the Work of Professor Marmarou.- 5 th International Hydrocephalus Workshop, Crete, Greece, May 20-23, 2010: Themes and Highlights.- Modelling of CSF Dynamics - Legacy of Professor Anthony Marmarou.- II Importance of Data, Especially from Randomized Controlled Trials.- Ethical Considerations in Hydrocephalus Research that Involves Children and Adults.- Conservative versus Surgical Management of Idiopathic Normal Pressure Hydrocephalus: a prospective randomized controlled double blind trial; study protocol.- Ten Years of Clinical Experience in the Use of Fixed-Pressure vs. Programmable Valves: A Retrospective Study of 159 Patients.- III Magnetic Resonance Imaging as a Powerful Tool.- Changes of fractional anisotropy (FA) and apparent diffusion coefficient (ADC) in patients with idiopathic normal pressure hydrocephalus.- Virchow-Robin spaces in idiopathic normal pressure hydrocephalus: A surrogate imaging marker for co-existing microvascular disease?.- Quantification of normal CSF flow through the aqueduct using PC-Cine MRI at 3T.- Correlation between tap test and CSF aqueductal stroke volume in idiopathic normal pressure hydrocephalus.- IV Basic Science: The Aquaporin Story.- Overview of the CSF dual outflow system.- Hydrocephalus and aquaporins. The role of aquaporin-1.- Hydrocephalus and aquaporins. The role of aquaporin-4.- Acetazolamide-induced Decrease of Apical Fluid Flow in Choroid Plexus is Associated with Nonessential Changes in Aquaporin-1 Expression.- V Experimental Studies: Hydrocephalus.- Physical phantom of cranio-spinal hydrodynamics.- Programmable Shunt Assistant tested in Cambridge Shunt Evaluation Laboratory.- Simulation of existing and future electromechanical shunt valves in combination with a model for brain fluid dynamics.- Examination of deposits in Cerebrospinal Fluid shunt valves using Scanning Electron Microscopy.- Microstructural alterations of silicone catheters in an animal experiment: histopathology and SEM-findings.- Expression analysis of High Mobility Group Box-1 Protein (HMGB-1) in the cerebral cortex , hippocampus , cerebellum of the congenital hydrocephalus rat (H-Tx rat).- Brain Localization of Leucine-Rich 2 Glycoprotein and its Role.- Role of artificial cerebrospinal fluid as perfusate in neuroendoscopic surgery: A basic investigation.- Subdural or intraparenchymal placement of long-term telemetric ICP- measurement-devices?.- VI Clinical Studies: Hydrocephalus.- A twelve-year hospital outcome on patients with idiopathic hydrocephalus.- What is the appropriate shunt system for Normal Pressure Hydrocephalus?.- Indications for endoscopic third ventriculostomy in normal pressure hydrocephalus.- The Role of Endoscopic Third Ventriculostomy in the Treatment of Selected Patients with Normal Pressure Hydrocephalus.- Endoscopic third ventriculostomy in obstructive hydrocephalus. Surgical technique and pitfalls.- Benign cerebral aqueduct stenosis in an adult.- Efficacy and versatility of the 2-micron continuous wave laser in neuroendoscopic procedures.- Complications of endoscopic third ventriculostomy. A meta-analysis.- Syndrome of inappropriately low-pressure acute hydrocephalus (silpah) ( previously known as negative-pressure hydrocephalus).- Lhermitte-Duclos disease presenting with hydrocephalus.- Atypical meningioma in the posterior fossa associated with colpocephaly and agenesis of the corpus callosum.- The management of the intraventricular hemorrhage in preterm infant with low birth weight.- Pathophysiology of Brain Stem Lesions Due to Overdrainage.- Dynamics of CSF flow in slit ventricle syndrome.- Quality and safety of home ICP monitoring compared to in-hospital monitoring.-