 Sinonasal polyposis SP is a chronic inflammatory disease of the lining of the nasal passages and sinuses, with a prevalence of approximately 2-3 of the general population. The prevalence of asthma in patients diagnosed with SP is much greater than that of the general population and can reach half of the cases and indicate a more severe phenotype and worse control in asthmatic patients without SP. It is possible that the pathophysiologic mechanisms underlying the development of SP and concomitant asthma are the same and both processes can be considered the same disease. 