OBJECTIVES: We compared histologic findings on light microscopy of viscid secretions found in association with nasal polyps with those found in patients with chronic sinusitis without polyposis (CSWP). The differences might further understanding of nasal polyp pathogenesis. METHODS: In a prospective controlled study, viscid secretions found in association with nasal polyps were collected at endoscopic sinus surgery. Retained secretions in ... Read more