Endoscopy
polyps, purulent
Endoscopic Lund-Kennedy scores were also assessed with a 30° endoscope for each nostril separately. Lund-Kennedy scores range from 0 to 20. Scoring includes the assessment of polyps (0=no polyps, 1=middle meatus, 3=beyond middle meatus), discharge (0=no discharge, 1= thin discharge, 2=thick or purulent discharge) and edema/scarring/crusting (0=absent, 1=mild, 2=severe). The highest score per side was graded. At all time points, the endoscopy was recorded in a standardized fashion and was interpreted by a central investigator.