| Chest X-rays findings | Frequency and percentage (%) |
| Normal | 11 (21.1%) |
| Consolidation syndrome | 39 (75.0%) |
| Interstitial syndrome | 8 (15.4%) |
| Alveolo-interstitial syndrome | 8 (15.4%) |
| Pleural syndrome | 5 (9.6%) |
| Thickening of bronchial walls | 4 (7.7%) |