Objective: To study the multidisciplinary approach for skull base tumors with both intra and extra-cranial involvement and to improve the surgical efficacy. Method: 78 cases were analyzed retrospectively. The relation between surgical approach and the origin and extension of the tumor is analyzed.[for full text, please go to the a.m. URL] ; SeriesInformation ; 64. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)