| No. | Performance | Score |
|---|---|---|
| (1) | Unbilateral patchy shadows or ground‐glass opacity | 5 |
| (2) | Bilateral patchy shadows or ground‐glass opacity | 7 |
| (3) | Diffuse changes for (1) or (2) | 2 |
| (4) | Unbilateral solid shadow, strip shadow | 2 |
| (5) | Bilateral solid shadow, strip shadow | 4 |
| (6) | Unbilateral pleural effusion | 2 |
| (7) | Bilateral pleural effusion | 4 |
| (8) | Increased or enlarge mediastinal lymph nodes | 1 |
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