Table 2. Frequency of sinus involvement by CT scan.
| Sinuses | Numbers n |
|---|---|
| Frontal | 13 (11) |
| Ethmoid | 33 (30) |
| Maxillary | 56 (50.9) |
| Sphenoid | 17 (15.5) |
| None | 1 (0.9) |
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