| No visible abnormalities |
The lung lobes are healthy and has no visible lesion. |
| Ground-glass opacity [56]
|
An area of hazy increased lung opacity through where vessels and bronchial structures may still be seen. Less opaque than consolidation |
| Halo sign [57]
|
A circumference of a nodule or mass surrounded by GGO. Representing a focus of pulmonary infarction surrounded by alveolar hemorrhage. |
| Reversed halo sign [57]
|
A distinct radiological sign representing a focal rounded area of GGO surrounded by a crescent or complete ring of consolidation. |
| Septal thickening [58]
|
The lesion is distributed in a grid pattern, which is a characteristic manifestation of local tissue fibrosis. |
| Consolidation [59]
|
A region of normally compressible lung tissue that has filled with liquid instead of air. |
| Fibrosis [60]
|
A lung disease that occurs when lung tissue becomes damaged and scarred. |
