A. General considerations.- Epidemiology.- Clinical presentation.- Classification, grading and prognosis.- Imaging: general principles. B. Systematic review: intra-axial adult brain tumours.- Diffuse astrocytic and oligodendroglial tumours.- Other gliomas, ependymal tumours and rare gliomas in the adult.- Neuronal and mixed neuronal-glial tumours.- Tumors of the pineal region.- Lymphomas.- Metastatic tumours of the CNS.- C. Systematic review: entra-axial adult brain tumours.- Tumours of the cranial and paraspinal nerves.- Meningiomas.- Mesenchymal non meningiomatous tumours.- D. Systematic review: pediatric brain tumours.- Brain tumours of the first two year of age.- Posterior fossa tumours of childhood.- Other pediatric tumours.