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Table 2 Multivariate analysis of recurrence rates according to surgical approach and presentation of the tumor

From: Surgical management of inverted papilloma; a single-center analysis of 247 patients with long follow-up

  Endoscopic approach Combined approach External approach Total
  No. of recurrences /
total no. of patients (%)
No. of recurrences /
total no. of patients (%)
No. of recurrences /
total no. of patients (%)
No. of recurrences /
total no. of patients (%)
Primary IP 3 / 24 (12.5) 1 / 3 (33.3) 18 / 68 (26.5) 22 / 95 (23.2)
Residual IP 8 / 32 (25.0) 2 / 6 (33.3) 21 / 46 (45.7)* 31 / 84 (36.9)†
Recurrent IP 5 / 23 (21.7) 1 / 5 (20.0) 15 / 40 (37.5) 21 / 68 (30.9)
Total 16 / 79 (20.3) 4 / 14 (28.6) 54 / 154 (35.1)‡ 74 / 247 (30.0)
  1. *p = 0.021 compared to primary IP treated with external approach. † p = 0.028 compared to total primary IP. ‡ p = 0.017 compared to total endoscopic approach