Bleeding is a major factor that hinders visualization in head and neck surgery and is a risk factor for intraoperative complications and perioperative morbidity. Endoscopic approaches also pose significant technical challenges to managing expected intraoperative bleeding and vascular injury. The approach for this publication in Otolaryngologic Clinics is to provide clinically relevant information in a problem-based manner that encompasses assessment to identify patients with a high risk for vascular complications, pre-operative, intra-operative and post-operative strategies to manage expected bleeding and major vessel injury during endoscopic sinus and skull base surgery for inflammatory and neoplastic diseases. Clinically relevant anatomy, physiology, pharmacology, and surgical and interventional radiology techniques to manage bleeding are outlined and an algorithm for management of major vessel injury such as internal carotid artery injury is presented. Because skull base surgery is generally undertaken as a team approach, this information is relevant to the subspecialized ENT surgeon from rhinology or head and neck specializations, to neurosurgeons, to interventional radiologists, and to neurophysiologists who monitors intraoperative cerebral and cranial nerve activity for these operations. Carl Snyderman leads this issue with Harshita Pant and has composed topics and assembled an expert group of practitioners to provide information. The reader will find this a novel, focused, and indispensable resource on all issues of hemostatis in head and neck surgery.

The skull base is a meeting point for anatomical regions, surgical specialties, and surgical philosophies. Skull base surgery is a dynamic subspecialty and the last decade has witnessed the application of endoscopic techniques to the ventral skull base using an endonasal corridor. The transition from external approaches to an endonasal corridor has not been without controversy. In this volume, we explore the nascent field of neurorhinology, a term that emphasizes the multidisciplinary collaboration between neurosurgeons and rhinologic head and neck surgeons. Authors have applied evidence-based medicine techniques to critically evaluate the literature and attempt to answer some of the most important clinical questions. This first of two volumes focuses on the more common pathologies seen by Otolaryngologists in neurorhinology.

Topics include: Spontaneous CSF leaks; Traumatic CSF leaks; Osteoma; Fibrous dysplasia of sphenoid and skull base; Orbital apex and orbit; Endoscopic endonasal transphenoidal resection of pituitary adenomas with adjunctive intraoperative magnetic resonance imaging; Craniopharyngioma; Tuberculum meningioma; Olfactory groove meningioma; Endoscopic endonasal surgery for nasal dermoids; Juvenile nasopharyngeal angiofibroma; Hypothalamic/ pituitary morbidity in skull base pathology