Summary of Demographic and Clinical Characteristics of the 90 Patients According to PET/CT and MDCT Results
| PET/CT result | MDCT result | |||
| Characteristic | Positive | Negative | Positive | Negative |
| Number of patients | 74 (82%) | 16 (18%) | 80 (89%) | 10 (11%) |
| Age (y) | ||||
| Mean ± SD | 46 ± 12 | 49 ± 11 | 47 ± 12 | 48 ± 11 |
| Range | 25–72 | 28–73 | 25–73 | 28–61 |
| Sex (n) | ||||
| Male | 27 (30%) | 5 (6%) | 30 (33%) | 2 (2%) |
| Female | 47 (52%) | 11 (12%) | 50 (56%) | 8 (9%) |
| Location of disease (n) | ||||
| Only thoracic | 39 (43%) | 0 | 58 (64%) | 0 |
| Only extrathoracic | 5 (6%) | 0 | 0 | 0 |
| Thoracic and extrathoracic | 30 (33%) | 0 | 22 (24%) | 0 |
| Existing therapy (n) | ||||
| None | 36 (40%) | 9 (10%) | 41 (46%) | 4 (4%) |
| Corticosteroids | 34 (38%) | 6 (7%) | 36 (40%) | 4 (4%) |
| Corticosteroids + methotrexate | 1 (1%) | 0 | 1 (1%) | 1 (1%) |
| Methotrexate | 3 (3%) | 1 (1%) | 2 (2%) | 1 (1%) |
| ACE (U/L) | ||||
| Mean level ± SD | 52.5 ± 19.1 | 43.6 ± 38.4 | 51.7 ± 24.3 | 44.4 ± 17.3 |
| Range | 10–115 | 5–142 | 5–142 | 23–80 |