From: The choice of endoscopic surgical approach and four steps of operation of inverted papilloma of the maxillary sinus
MS wall
Single attach
Multiple attach
Total
Posterior
4
11
15, 10.3%
Inferior
3
19
22, 15.2%
Lateral
5
24
29, 20.0%
Anterior
15
18, 12.4%
Medial
39
54, 37.2%
Superior
1
6
7, 4.8%
31
114
145,100%