{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T11:45:19Z","timestamp":1789040719523,"version":"build-2803163510"},"reference-count":36,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,10,10]],"date-time":"2024-10-10T00:00:00Z","timestamp":1728518400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int Forum Allergy Rhinol"],"published-print":{"date-parts":[[2025,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Olfactory dysfunction (OD) is a key symptom of chronic rhinosinusitis (CRS). Although extensively studied in CRS with nasal polyps (CRSwNP), OD in CRS without nasal polyps (CRSsNP) remains under\u2010researched. This study aims to assess the prevalence of OD and its evolution in surgically na\u00efve patients with CRSsNP undergoing endoscopic sinus surgery (ESS).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This prospective study included 97 participants with CRSsNP (mean age, 46.5 years; 70.1% men) and 97 healthy controls (mean age, 46.5 years; 70.1% men). Participants underwent psychophysical evaluations of orthonasal (using the Sniffin\u2019 Sticks test) and retronasal olfaction (using powdered aromas) at enrolment and 6 months post\u2010ESS.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Out of 97 patients, 81 (83.5%) completed all assessments. At enrolment, 23 (28.4%) CRSsNP patients had OD based on composite threshold, discrimination, identification scores, compared with 7 (8.6%) controls (absolute % difference, 19.8% [95% CI, 8.2\u201331.4]). Retronasal olfactory function was also significantly worse in CRSsNP patients. Six months post\u2010ESS, 30 patients (37.0%) experienced a clinically significant improvement in olfactory, whereas nonsignificant changes were observed in retronasal olfactory score, and 3.7% of patients experienced a deterioration of the olfactory function.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In conclusion, although 37% of patients experienced a clinically significant improvement in their sense of smell following ESS, the overall prevalence of OD in this surgically naive population appears relatively low, especially when compared to that observed in patients with CRSwNP. Therefore, ESS may offer some benefits for enhancing orthonasal olfactory function, but the extent of these improvements appears to be limited.<\/jats:p><\/jats:sec>","DOI":"10.1002\/alr.23467","type":"journal-article","created":{"date-parts":[[2024,10,10]],"date-time":"2024-10-10T14:11:01Z","timestamp":1728569461000},"page":"157-165","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Orthonasal and retronasal olfactory function in patients with chronic rhinosinusitis without nasal polyps undergoing endoscopic sinonasal surgery"],"prefix":"10.1002","volume":"15","author":[{"given":"Paolo","family":"Boscolo\u2010Rizzo","sequence":"first","affiliation":[{"name":"Department of Medical, Surgical and Health Sciences, Section of Otolaryngology University of Trieste  Trieste Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire","family":"Hopkins","sequence":"additional","affiliation":[{"name":"ENT Department Guy's and St Thomas\u2019 Hospitals  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Hummel","sequence":"additional","affiliation":[{"name":"Smell &amp; 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