This issue on endoscopic cranial base and pituitary surgery is led by experts in the field of Otolaryngology and Neurosurgery. Otolaryngologists/Head and Neck surgeons Dr. Raj Sindwani and Dr. Troy Woodard join with Neurosurgeon Dr. Pablo Recinos to present a comprehensive clinical approach. Topics include: Building an endoscopic skull base program (room setup and key equipment / IGS); Skull Base Anatomy (corridors, intra and extradural); Imaging in skull base surgery - CT, MRI, CT cisternogram, intraop CT; Sellar lesions / pathology; Principles of endoscopic pituitary surgery; Reconstruction of skull base defects - free graft, pedicle, TPF, alloderm; Lumbar drain utility (role of intrathecal fluorescein); Hemostasis in Skull Base Surgery (control of smaller vessels, maneuvers to minimize bleeding - warm irrigations, HOB up, embolization); Management of ICA Injury (intraop options, late complications); Meningioma; Esthesioneuroblastoma; Cordoma; Sinonasal Malignancies of Skull Base; Craniopharyngioma; Endonasal approaches to the craniocervical junction; Medical complications of Pituitary/skull base surgery - (ie. SIADH, DI, Hypopit); Post-op management of skull base patient (postop Abx, imaging, debridements, topical irrigations, more..). Articles cover surgical procedure, surgical complications, and surgical anatomy as relevant to the clinical discussion.