## Medical Management of Benign Nasal Polyps **Key Point:** Intranasal corticosteroids are the first-line medical therapy for benign inflammatory nasal polyps, with the goal of reducing polyp size and delaying surgical intervention. ### Mechanism of Action Intranasal corticosteroids (e.g., mometasone furoate, fluticasone propionate, beclomethasone) reduce mucosal inflammation, decrease mucus secretion, and promote polyp shrinkage through: - Suppression of eosinophilic infiltration - Reduction of inflammatory cytokines (IL-4, IL-5) - Decreased vascular permeability ### Dosing & Duration - **Mometasone furoate**: 50 µg per nostril, 1–2 sprays twice daily - **Fluticasone propionate**: 50 µg per nostril, 1–2 sprays once or twice daily - Minimum trial: **8–12 weeks** before assessing response - Some polyps regress completely; others shrink sufficiently to defer surgery **High-Yield:** Intranasal corticosteroids reduce polyp size in 50–70% of patients and can delay or eliminate the need for surgery in mild-to-moderate cases. ### When Surgery Is Indicated - Failure of medical management after 3 months of adequate intranasal corticosteroid therapy - Severe obstruction affecting quality of life or sleep - Recurrent acute sinusitis despite medical therapy - Suspicion of malignancy (atypical presentation, unilateral polyp) **Clinical Pearl:** Post-operative intranasal corticosteroids reduce recurrence rates from ~30% to ~10–15%, making them essential for long-term control even after endoscopic sinus surgery (ESS). ### Why Other Options Fail | Drug Class | Reason Not First-Line | |---|---| | Oral antihistamines (cetirizine) | Minimal effect on polyp size; only symptomatic relief of allergic rhinitis if coexistent | | Topical decongestants (xylometazoline) | Temporary mucosal vasoconstriction; no anti-inflammatory effect; risk of rebound congestion | | Antibiotics (amoxicillin-clavulanate) | Only indicated if secondary bacterial infection; benign polyps are non-infectious | [cite:Dhingra 7e Ch 5]
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