Table 2.
Analysis of imaging signs in all confirmed patients
| Imaging findings | COVID-19 | Non-COVID- 19 |
| (n = 43) | (n = 49) | |
| Distribution of lesions | ||
| Subpleural distribution | 33 (77%) | 23 (47%) |
| Other distributions | 10 (23%) | 26 (53%) |
| Morphology of lesions | ||
| Only patchy ground glass opacities | 30 (69%) | 12 (24%) |
| Patchy ground glass opacities and nodular shadows | 5 (12%) | 7 (14%) |
| Patchy ground glass opacities and consolidation shadows | 7 (17%) | 8 (16%) |
| Patchy ground glass opacities and consolidation- and nodular- shadows | 0 (0%) | 2 (4%) |
| Only nodular shadows | 1 (2%) | 6 (12%) |
| Only consolidation shadows | 0 (0) | 14 (29%) |
| Involvement of lobular interstitium | ||
| The long axis of the lesion is parallel to the pleura | 42 (98%) | 11 (22%) |
| Fine-mesh changes | 39 (91%) | 5 (10%) |
| Bronchiectasis with rigid course | 29 (67%) | 18 (37%) |
| Inflammatory responses | ||
| Dilatation of small vessels | 40 (93%) | 25 (51%) |
They are described as Number of cases (percentage). Classification of lesions based on distribution did not overlap with that based on morphology. As for the involvement of lobular interstitium, several cases had multiple signs at the same time, and the decimal point was omitted for the percentage.