This book contains a complete overview of all surgical techniques, describes all current indications of the techniques, and considers all relevant clinical aspects. The practitioner has a quick and complete overview of the current state of the art in the field. Main Topics Include: Endonasal sinus surgery – basic principles and approachesTechnique of endoscopic endonasal surgery Results of endonasal sinus surgery for chronic sinusitis Results in defined patient groupsExtended spectrum of endoscopic endonasal surgery Complications, side-effects and sequelaePostoperative care following endoscopic surgeryTechnical innovations; Summary and prospects