Table 1 Radiation-induced lung injury grading scale (RGS)
Number of affected lung segments on thoracic computer tomography scan | |||
|---|---|---|---|
RGS | < 4 segments | 4–5 segments | > 5 segments |
0 | No changes | No changes | No changes |
1 | Ground glass opacity | ||
Mild | Consolidation | ||
Nodular | |||
Patchy | |||
Confluent | |||
Ipsilateral pleural effusion < 1 cm | |||
Volume loss | |||
Pleural thickening | |||
Interstitial changes | |||
Fibrosis | |||
2 | Ipsilateral pleural effusion 1–2 cm | Ground glass opacity | |
Moderate | Consolidation | ||
Nodular | |||
Patchy | |||
Confluent | |||
Volume loss | |||
Pleural thickening | |||
Interstitial changes | |||
Fibrosis | |||
3 | Ipsilateral pleural effusion > 2 cm | Ground glass opacity | |
Severe | Consolidation | ||
Nodular | |||
Patchy | |||
Confluent | |||
Volume loss | |||
Pleural thickening | |||
Interstitial changes | |||
Fibrosis |