Background : Our aim in this study was to recognize the endoscopic anatomy of the Pterygopalatine fossa (PPF) and the anatomic variations of the related neurovascular structures, to define the endoscopic endonasal approach to this region. Methods: In a case series study 17 fresh adult cadavers were studied by endoscopic endonasal approach. To reach the pterygopalatine fossa endonasally, we ...