1. Fokkens WJ, Lund VJ, Mullol J, et al. EPOS 2012: European position paper on rhi-nosinusitis and nasal polyps 2012. A summary for otorhinolaryngologists. Rhinolo-gy. 2012;50(1):1-12.

2. Dietz de Loos DA, Hopkins C, Fokkens WJ. Symptoms in chronic rhinosinusitis with and without nasal polyps. Laryngoscope. 2013;123(1):57-63.

3. SNOT-20 Copyright © 1996 by Jay F. Piccirillo, M.D., Washington University School of Medicine, St. Louis, Missouri SNOT-22 Developed from modification of SNOT-20 by National Comparative Audit of Surgery for Nasal Polyposis and Rhinosinusitis Royal College of Surgeons of England.

4. Stevens WW, Schleimer RP, Kern RC. Chronic rhinosinusitis with nasal polyps. J al-lergy Clin Immunol Pract. 2016;4(4):565–72.

5. Lombardi C, et al. Consensus Multidisciplinare ARIA-ITALIA: poliposi nasale e farmaci biologici. https://www.researchgate.net/publication/ 347936947_Consensus_Multidisciplinare_ARIA-ITALIA_poliposi_nasale_e_farmaci_biologici_per_ARIAITALIA_ e_Societa_Scientifiche_aderenti.

6. Bacher C. EUFOREA expert board meeting on uncontrolled severe chronic rhinosinusitis with nasal polyps (CRSwNP) and biologics: Definitions and management (J Allergy Clin Immunol 2021;147: 29-36.)

7. Fokkens WJ et al. European Position Paper on Rhinosinusitis and Nasal Polyps 2020 Rhinology Supplement 29: 1 - 464, 2020.

8. DeConde AS, Mace JC, Levy JM, Rudmik L, Alt JA, Smith TL. Prevalence of polyp recurrence after endoscopic sinus surgery for chronic rhinosinusitis with nasal pol-yposis. Laryngoscope. 2017;127(3):550-555.

9. Bassiouni A, Wormald PJ. Role of frontal sinus surgery in nasal polyp recurrence. Laryngoscope. 2013;123(1):36-41.

10. Wynn R, Har-El G. Recurrence rates after endoscopic sinus surgery for massive sinus polyposis. Laryngoscope. 2004;114(5):811-813.

11. Bachert C, Gevaert E. Advances in rhinitis and rhinosinusitis in 2015. J Allergy Clin Immunol. 2016;138(5):1277-1283.

12. Gandhi NA, Bennett BL, Graham NM, Pirozzi G, Stahl N, Yancopoulos GD. Target-ing key proximal drivers of type 2 inflammation in disease. Nat Rev Drug Discov. 2016;15(1):35-50.

13. Chaaban MR, Walsh EM, Woodworth BA. Epidemiology and differential diagnosis of nasal polyps. Am J Rhinol Allergy. 2013;27(6):473-478.

14. Van Zele T, Claeys S, Gevaert P, et al. Differentiation of chronic sinus diseases by measurement of inflammatory mediators. Allergy. 2006;61(11):1280-1289.

15. Van Zele T, Holtappels G, Gevaert P, Bachert C. Differences in initial immunopro-files between recurrent and nonrecurrent chronic rhinosinusitis with nasal polyps. Am J Rhinol Allergy. 2014;28(3):192-198.

16. Khan A, Vandeplas G, Huynh TMT, et al. The Global Allergy and Asthma European Network (GALEN rhinosinusitis cohort: a large European cross-sectional study of chronic rhinosinusitis patients with and without nasal polyps. Rhinology. 2019;57(1):32-42.

17. White AA, Stevenson DD. Aspirin-exacerbated respiratory disease. N Engl J Med. 2018;379(11):1060–1070.