RT Book, Section A1 Chan, Yvonne A1 Goddard, John C. SR Print(0) ID 1172370691 T1 Endoscopic Sinus Surgery T2 K.J. Lee’s Essential Otolaryngology: Head and Neck Surgery, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781260122237 LK accesssurgery.mhmedical.com/content.aspx?aid=1172370691 RD 2024/04/20 AB There has been an evolution in the theories of pathogenesis and clinical management of sinonasal inflammatory disease that has revolutionized the practice of otolaryngologists.Diseases previously managed with open procedures are now widely managed with endoscopic approaches as the technology too has greatly improved.Further, the advancement of topical therapies and in-office procedures has created opportunities to manage disease, while creating cost-saving techniques and possibly improving patient safety.However, the variability of the anatomy and their critical relationship with the sinonasal cavities still remain true and a detailed knowledge of the embryology, and anatomy of the paranasal sinuses is necessary to avoid potentially disastrous surgical complications.