This course will provide participants an update and review of pertinent topics that continue to evolve in our understanding of chronic rhinosinusitis (CRS). CRS is a challenging condition, even in the hands of experience otolaryngologists; therefore, this course provides participants expert opinions on medical and surgical management of this condition. The course features a highly sought out Frontal Sinus Masterclass which allows each participant to systematically review variety of CT scans in all 3 planes and use a building block method to determine the drainage pathway of the frontal sinus. Lab participants will share a cadaver head with CT imaging. Using state of the art equipment participants will be shown pearls to succeed in doing standard and advanced sinus procedures. This course is applicable to practicing surgeons, advanced trainees and fellows.