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Radiographic findings (occipitomental view) of paranasal sinuses of patients during common cold(n = 98)
| Days of common cold | |||
|---|---|---|---|
| Day 1 | Day 7 | Day 21 | |
| Paranasal sinusitis (%) | 14.2 | 38.8 | 11.3 |
| Maxillary sinusitis (%) | 14.2 | 38.8 | 11.3 |
| Mucosal thickening over 5 mm (%) | 50.0 | 71.1 | 72.7 |
| Air-fluid level (%) | 35.7 | 23.7 | 27.3 |
| Total opacity (%) | 14.3 | 5.3 | 0 |
| Ethmoid, frontal or sphenoid sinusitis (%) | 3.1 | 1.0 | 1.0 |
| Mucosal thickening (≤5 mm) (%) | 20.4 | 11.2 | 4.1 |
| Cyst or polyp (%) | 5.1 | 3.1 | 7.1 |
| Normal (%) | 60.2 | 46.9 | 77.6 |
