Fig. 2

Postoperative changes in SNOT-22 scores. The dark grey bars represent preoperative SNOT-22 scores. The white bars represent the SNOT-22 scores at 3 months postoperatively. The light grey bars represent the SNOT-22 scores at 6 months postoperatively. The black bars represent the SNOT-22 scores at 12 months postoperatively. The dashed bar represents the SNOT-22 score at the time of IP recurrence. *p < 0.05. IP = inverted papilloma; SNOT-22 = 22-item Sino-Nasal Outcome Test