Table 2.
Active lesions in the anterior chest wall detected by MRI in the 71 patients with SAPHO syndrome
| Active lesions | Number (%) |
|---|---|
| Bone marrow edema | |
| Sternoclavicular joint | 27 (38.0) |
| Left only | 9 (12.7) |
| Right only | 6 (8.5) |
| Bilateral | 12 (16.9) |
| Sternocostal joint | 62 (87.3) |
| Left only | 7 (9.9) |
| Right only | 12 (16.9) |
| Bilateral | 43 (60.6) |
| 1st | 38 (53.5) |
| 2nd to 6th | 11 (15.5) |
| Clavicle | 35 (49.3) |
| Medial end, left only/right only/bilateral | 11 (15.5)/8 (11.3)/16 (22.5) |
| Middle and lateral region, left only/right only/bilateral | 1 (1.4)/1 (1.4)/0 (0) |
| Sternum | |
| Manubrium sterni | 60 (84.5) |
| Region next to the clavicle and the first rib | 54 (76.1) |
| Left only/right only/bilateral | 10 (14.1)/9 (12.7)/35 (49.3) |
| Sternal angle | 26 (36.6) |
| Mesosternum | 11 (15.5) |
| Region next to the 3rd ribs | 8 (11.3) |
| Region next to the 4th ribs | 7 (9.9) |
| Region next to the 5th ribs | 6 (8.5) |
| Region next to the 6–8th ribs | 7 (9.9) |
| Xiphoid | 3 (4.2) |
| Synovitis | |
| Sternoclavicular joint | 54 (76.1) |
| Left only/right only | 4 (5.6)/8 (11.3) |
| Bilateral | 43 (60.6) |
| Narrowing of joint space, left only/right only/bilateral | 1 (1.4)/2 (2.8)/8 (11.3) |
| Pseudowidening of joint space, left only/right only/bilateral | 2 (2.8)/1 (1.4)/7 (9.9) |
| Manubriosternal joint | 5 (7.0) |
| Sternocostal joint | 11 (15.5) |
| 1st, left only/right only/bilateral | 0 (0)/0 (0)/2 (2.8) |
| 2nd, left only/right only/bilateral | 2 (2.8)/2 (2.8)/7 (9.9) |
| 3rd, left only/right only/bilateral | 1 (1.4)/4 (5.6)/5 (7.0) |
| 4–6th, left only/right only/bilateral | 0 (0)/0 (0)/4 (5.6) |