Clinical symptoms of chronic rhinosinusitis with nasal polyps (eosinophilic and non-eosinophilic) are related to sinus computed tomography but not to endoscopic findings

Background: In the clinical assessment of chronic rhinosinusitis with nasal polyps (CRSwNP), evaluation of symptoms, nasoendoscopy findings and sinus computed tomography (CT) scan staging is employed in the management plan. Although prior studies have been done to assess the correlation of the three modalities in CRSwNP, such evaluation in patients with eosinophilic and non-eosinophilic types of CRSwNP requires further investigation. The aim of this study was to correlate the sinus CT scan staging to symptom and endoscopic scores in both types of CRSwNP. Material and method: Patients with CRSwNP were classified into 2 types, eosinophilic and non-eosinophilic. Both types were assessed by Sino-Nasal Outcome Test 22 (SNOT-22) symptom score, nasal endoscopy Lund Kennedy grading (LK) score and sinus CT Lund Mackay (LM) staging score. All three modalities were correlated. Results: Forty-four patients were recruited for this study. There was significant correlation between sinus CT and symptom scores in the eosinophilic (r = .51, p = .031) and the non-eosinophilic (r = .76, p < .001) types. There was no significant correlation between symptom and nasoendoscopic scores in the eosinophilic (r= .12, p= .641) and the non-eosinophilic (r = .22, p = .276) types. There was also no significant correlation between sinus CT and nasoendoscopic scores in the eosinophilic (r = .20, p= .418) and the non-eosinophilic (r = .14, p= .508) types. Conclusions: Sinus CT staging correlates well with the symptom score for both the eosinophilic and the non-eosinophilic types of CRSwNP. The good correlation suggests both modalities are a reliable guide for their evaluation and management planning. (C) 2021 Sociedad Espanola de Otorrinolaringologia y Cirugia de Cabeza y Cuello. Published by Elsevier Espana, S.L.U. All rights reserved.