Chest radiographic stages of sarcoidosis and their prognosis
For chest radiographs, the Scadding Chest X Ray staging system is used. Notably, the stages are not chronologic, do not indicate disease chronicity, and do not correlate with pulmonary function testing.
High-resolution computed tomography of the chest can show abnormalities when chest radiographs are normal. The chest radiographic stage at presentation can be used to predict the probability of future spontaneous remission which can help guide therapy .
Scadding Chest X-Ray Staging System
| Stage | Chest Radiographic Findings | Spontaneous Remission Rate (%) |
|---|---|---|
| 0 | Normal | – |
| 1 | Bilateral hilar adenopathy | 70–90 |
| 2 | Bilateral hilar adenopathy with pulmonary infiltrates | 30–60 |
| 3 | Pulmonary infiltrates with lung insufficiency | 10–20 |
| 4 | End-stage pulmonary fibrosis | 0 |
