Imaging Results and ACE Level in Patients with Sarcoidosis
| 18F-FDG PET/CT–positive result | 18F-FDG PET/CT–negative result | |||
| MDCT staging of thoracic sarcoidosis | High ACE | Normal ACE | High ACE | Normal ACE |
| Stage 0: no signs of thoracic disease (n = 10) | 3* | 3* | 0 | 4 |
| Stage I: bihilar lymphadenopathy (n = 42) | 17 | 16 | 1 | 8 |
| Stage II: bihilar lymphadenopathy and reticulonodular infiltrates (n = 25) | 10 | 12 | 2 | 1 |
| Stage III: bilateral pulmonary infiltrates (n = 8) | 3 | 5 | 0 | 0 |
| Stage IV: fibrocystic changes (n = 5) | 3 | 2 | 0 | 0 |
| Total | 36 | 38 | 3 | 13 |
↵* Extrathoracic disease only.