In neurosurgery currently a revival of bypass surgery is taking place with the appreciation of the fact that a certain subset of patients with aneurysms, ischemia or tumours remain untreatable despite advances in neurological treatment and neuroradiological intervention techniques. In the future different specialities will cooperate to treat this very difficult patients. For example an ELANA bypass will more frequently be combined with stenting or other neuroradiological procedures to treat difficult aneurysms like giant basilar artery aneurysms or other growing aneurysms filled with coils. ELANA will be performed in a simpler, possible minimal invasive way. When this is developed, other fields like the coronary bypass grafting will benefit from the advanced ELANA prccedure beause of the ease of use and the lack of occlusion time for the patient and time pressure for the surgeon. For more information on these and other research subjects, please contact T.P.C. van Doormaal. Please use the following link: Contact