Table 1. Histological distribution of benign sinonasal tumors.
|
Histological group/subtype |
No. |
% |
|
Osseous lesions |
83 |
22.6 |
|
Osteoma |
39 |
47.0 |
|
Fibrous dysplasia |
24 |
28.9 |
|
Ossifying fibroma |
15 |
18.1 |
|
Aneurysmal bone cyst |
5 |
6.0 |
|
Sinonasal papilloma |
126 |
34.2 |
|
Inverted papilloma |
106 |
84.1 |
|
Oncocytic papilloma |
17 |
13.5 |
|
Exophytic papilloma |
2 |
1.6 |
|
Mixed papilloma |
1 |
0.8 |
|
Juvenile nasopharyngeal angiofibroma |
70 |
19.0 |
|
Other benign sinonasal tumors |
89 |
24.2 |
|
Total |
368 |
100.0 |
Percentages for major histological groups are calculated among the total cohort (n=368); percentages for indented subtypes are calculated within the respective histological group