Table 1.
Differential Diagnosis between COVID-19 pneumonia and other Respiratory Disease.
| Diseases | CT findings |
|---|---|
| Influenza A virus pneumonia | Bilateral diffuse GGO, confluent rapidly |
| Thickened bronchovascular bundle | |
| With or without consilidation | |
| Distributed along with the bronchial vascular bundle or subpleural region | |
| Streptococcus pneumoniae | Consolidation of lobes or lobules without GGO |
| Mycoplasma pneumonia | Bronchial wall Thickening |
| Patchy shadows along the bronchovascular bundle | |
| Accompany with CT signs like tree-in-budThe tree-in-bud sign | |
| Aspiration pneumonia | Bronchiectasis |
| Multifocal GGO | |
| GGO change quickly and be absorbed in a short time | |
| SARS | Unilateral or bilateral GGO, partially consolidate |
| Inter and intra lobular septal thickening and crazy-paving sign could be found | |
| Bilateral, basliar subpleural airspace | |
| MERS | Diffuse GGO |
| Lobular septal thickening and pleural effusions are atypical | |
| COVID-19 | Multifocal GGO associated with air bronchogram and/or crazy-paving pattern |
| The lesions can be segmental or lobular distribution, partially confluent | |
| Located in Subpleural | |
| Wedge-shaped or fanlike | |
| perpendicular to the bronchovascular bundle |