Table 2.
Clinical and imaging comparison between COVID-19 and early lung tumor [34].
| - | - | COVID-19 | Early Lung Tumor |
|---|---|---|---|
| Epidemic history | - | Yes | No |
| Symptoms (fever, dyspnea) | - | Yes | No |
| Virus nucleic acid test | - | Positive | Negative |
| Lesions location | Peripheral 1/2 band | 97% | 62% |
| - | Inner 1/2 band | 3% | 38% |
| Number of lesions | - | Multiple | Single |
| Lesions diameter | > 1 cm | 92% | 64% |
| - | ≤1 cm | 8% | 36% |
| In 5-7ds, GGO turns into | “Paving stone sign” | Some | No |
| - | Consolidation | Some | No |
| - | “White lung” | A few | No |
| Image features change | - | Fast | Slow |
| Lobed sign | - | No | Yes |
| Traction sign | - | No | Yes |
| Pleural depression sign | - | No | Yes |
| Bronchial truncation sign | - | No | Yes |
| Vascular bundle sign | - | No | Yes |
| Rapid deterioration into | Severe dyspnea | A few | No |
| - | ARDS | A few | No |
| Pathology | - | Inflammatory reaction: Hyaline membrane, neutrophil infiltration | Adenocarcinoma in situ or minimally invasive adenocarcinoma |
ARDS: Acute Respiratory Distress Syndrome.