A 48-year-old woman with a 6-month history of chronic rhinosinusitis (CRS) with nasal polyps presents with persistent nasal obstruction and anosmia despite 3 months of topical nasal corticosteroid spray and saline irrigation. Nasal endoscopy confirms bilateral nasal polyps and opacification of the maxillary and ethmoid sinuses. CT PNS shows extensive polypoid disease with sinus opacification. She has no history of asthma or aspirin sensitivity. What is the most appropriate next step in management?

Explanation

## Clinical Assessment This patient has **chronic rhinosinusitis with nasal polyps (CRSwNP)** that has failed **optimal medical therapy** (topical corticosteroid + saline irrigation for 3 months). The presence of bilateral polyps, persistent obstruction, and anosmia despite adequate medical management indicates the need for **surgical intervention**. ## Stepwise Management of CRS with Nasal Polyps ```mermaid flowchart TD A[CRS with nasal polyps diagnosed]:::outcome --> B[Initiate medical therapy:<br/>topical corticosteroid +<br/>saline irrigation]:::action B --> C{Response after<br/>8-12 weeks?}:::decision C -->|Yes| D[Continue medical therapy<br/>long-term]:::action C -->|No| E{Severe disease or<br/>systemic features?}:::decision E -->|Yes| F[Short course systemic<br/>corticosteroid +<br/>optimize topical therapy]:::action E -->|No| G[Proceed to FESS]:::action F --> H{Improvement?}:::decision H -->|Yes| I[Continue topical therapy]:::action H -->|No| J[FESS]:::action ``` ## Why FESS Is the Correct Next Step **Key Point:** After **failure of adequate medical therapy** (topical corticosteroid + saline for ≥8–12 weeks), **FESS is the standard of care** for CRSwNP. Surgery addresses the anatomic obstruction and allows better topical drug delivery postoperatively. **High-Yield:** Indications for FESS in CRSwNP: 1. **Persistent symptoms despite optimal medical therapy** — this patient meets this criterion 2. **Bilateral polyps with significant obstruction** — confirmed on endoscopy and imaging 3. **Anosmia** — indicates severe disease affecting olfactory epithelium 4. **Failure of topical corticosteroid alone** — suggests need for definitive surgical management **Clinical Pearl:** FESS in CRSwNP includes: - Endoscopic polypectomy - Ethmoidectomy (anterior and posterior) - Middle meatal antrostomy (to improve maxillary sinus access and drainage) - Sphenoidotomy if sphenoid disease present Postoperative topical corticosteroid therapy is continued to prevent recurrence. ## Medical vs. Surgical Therapy Timeline | Phase | Duration | Intervention | Expected Outcome | |-------|----------|--------------|------------------| | Initial medical | 8–12 weeks | Topical corticosteroid + saline | 60–70% respond | | Failed medical | 2–4 weeks | ± Systemic corticosteroid | Assess for surgery | | Surgical | Ongoing | FESS + postop topical therapy | 80–90% symptom improvement | **Mnemonic: FAIL-FESS** — **F**ailed topical therapy → **A**ssess severity → **I**f no improvement → **L**ist for **F**unctional **E**ndoscopic **S**inus **S**urgery.