Clinical and imaging feature in patients with hidradenitis suppurativa (HS).
| Features | n (%) |
|---|---|
| Clinical | |
| IBP | 35 (81) |
| Cervical spine | 18 (41) |
| Thoracic spine | 17 (39) |
| Lumbar spine | 27 (62) |
| Buttock | 20 (46) |
| Peripheral arthritis | 11 (25) |
| Dactylitis | 4 (9) |
| Enthesitis | 20 (46) |
| Anterior chest wall pain | 15 (34) |
| Aseptic osteitis | 4 (9) |
| Imaging | |
| Radiography, n = 31 | |
| SI involvement | 10 (32) |
| Spine involvement | 4 (12) |
| MRI, n = 15 | |
| Inflammatory lesions (SI joint) | 3 (20) |
| Chronic lesions (SI joint) | 3 (20) |
| Inflammatory lesions (spine) | 3 (20) |
IBP: inflammatory back pain; SI: sacroiliac; MRI: magnetic resonance imaging.