lung
Idiopathic interstitial pneumonia - classification by the American Thoracic Society (ATS) and the European Respiratory Society (ERS)
This multidisciplinary concensus was adopted in 2001 by both the American Thoracic Society (ATS) and the European Respiratory Society (ERS) in order to standardize classification of the idiopathic interstitial pneumonias.
| Name | Interstitial pulmonary fibrosis | Non-specific interstitial pneumonia | Cryptogenic organising pneumonia | Acute interstitial pneumonia | Desquamative interstitial pneumonia | Respiratory bronchiolitis - Interstitial lung disease |
|---|
Idiopathic Lung fibrosis - semiquantitative grading of fibrotic and ground glass score
Gay et al. used a semiquantitative score to objectively assess the extent of lung fibrosis. In the study, each lobe was scored separately and mean of all lobes was used as a fibrotic, ground glass, and total score for each patient.
| Alveolar score | Description |
|---|---|
| 0 | no alveolar disease |
| 1 | ground glass opacity involving <5% of the lobe (minimal disease) |
| 2 | ground glass opacity involving <25% of the lobe |
Lung fibrosis - semiquantitative grading by Warrick et al.
Warrick classification of lung involvement in interstitial lung disease is a quantitative scoring method of disease extent and severity. The grading involves the following features of the disease:
| Feature | Grading |
|---|---|
| Global disease extent | Estimated to the nearest 5% |
| Extent of reticulation | Proportion of total disease extent |
| Extent of ground-glass | Proportion of total disease extent |
Lung fibrosis in systemic sclerosis - grading by Wells et al.
Wells classification of lung involvement in systemic sclerosis is a quantitative scoring method of disease extent and severity. All lobes are scored independently. Maximum score for each lobe is 5.
| Grade | Description |
|---|---|
| 1 | Ground glass opacity alone |
| 2 | Ground glass opacity > reticular pattern extent |
| 3 | Ground glass opacity = reticular pattern extent |
| 4 |
