From: Sinonasal masses: modalities, clinical presentation, and management in Sudan
Frequency
Percent
None
41
16.8
Allergic polyp
76
31.1
Antrocoanal polyp
19
7.8
Congenital
4
1.6
Fungal polyp
102
41.8
Mucocele
2
0.8
Total
244
100