CT pattern of GGO | Patients n | |||
Acute exacerbation# | Survival from acute exacerbation | Accelerated decline¶ | Survival of accelerated decline | |
Diffuse | 1 | 0 | 3 | 0 |
Multifocal | 7 | 0 | 14 | 5 |
Peripheral | 3 | 2 | 6 | 5 |
Total | 11 | 2 | 23 | 10 |
All patients had reticular and honeycombing densities in both lower lobes in addition to ground glass density. CT: computed tomography; GGO: ground glass opacity. #: patients who satisfied the acute exacerbation according to Kondoh's criteria; ¶: patients with definite acute exacerbation (11 patients), suspicious acute exacerbation but not satisfying Kondoh's criteria (five patients) and diagnostic uncertainty (seven patients).