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Predictors of Disease Control After Endoscopic Sinus Surgery Plus Long-Term Local Corticosteroids in CRSwNP
Eugenio De Corso1,2, Stefano Settimi1, Laura Tricarico1
1Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Background:
in the era of new biological agents it is important to identify patients who may benefit from conventional therapies such as endoscopic sinus surgery (ESS) plus long-term local corticosteroids from those with patterns of inflammation that are more difficult to control post-operatively and who may benefit from other therapies.
Objective:
determine if preoperative assessment of type and grade of inflammation and clinical factors can predict disease control with ESS plus long-term local corticosteroids in chronic rhinosinusitis with nasal polyps (CRSwNP).
Methods:
Eighty patients treated with ESS plus mometasone-furoate 200 μg BID for CRSwNP and followed for at least 1 year were enrolled (November 2017-December 2018) in this prospective observational study. Type and grade of inflammation were evaluated preoperatively by nasal cytology. Based on cellular pattern, patients were grouped as neutrophilic (n = 20), eosinophilic (n = 38), or mixed eosinophil-neutrophilic (n = 22). SNOT-22 and Lund-Kennedy Endoscopic Score were evaluated at baseline and at 3, 6, 9, and 12 months after surgery and used to define disease control.
Results:
The cumulative probability of remaining free of significant modification of endoscopic score (Lund-Kennedy Endoscopic Score >2) at 3, 6, 9, and 12 months was 0.84, 0.76, 0.71, and 0.68, respectively. At 12-month postoperative evaluation good disease control was observed in 54 of 80 patients (67.5%). Compared to those with good post-operative disease control, those with poor control had a significantly higher pre-operative mean count of eosinophils and neutrophils (p < 0.05). The preoperative inflammatory pattern was associated with relative risk of poor control: neutrophilia (RR: 3.10; CI:1.24-7.71), eosinophilia (RR:8.42; CI:2.72-15.12), and mixed eosinophilic and neutrophilic (RR:25.11; CI:19.41-30.01). We also confirmed that asthma, allergy, blood eosinophilia, and ASA triad could predict poor control.
Conclusions:
The type and load of inflammation evaluated preoperatively and selected clinical factors can predict poor control of CRSwNP treated with ESS and local corticosteroids.
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