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Histological features of Caplan lesions, silicotuberculosis and progressive massive fibrosis
| Caplan lesions | Silicotuberculosis | Progressive massive fibrosis | |
|---|---|---|---|
| Palisading | + | – | – |
| Dust banding | + | – | – |
| Satellite tubercles | – | + | – |
| Necrosis | + | + | + |
| Cholesterol crystals | + | ± | + |
| Calcification | + | + | ± |
+ present; ± poorly represented; – absent.
