From: Atypical skeletal involvement in patients with Erdheim–Chester disease: CT imaging findings
Findings | Spine | Pelvis | Ribs | Clavicles | Sternum |
---|---|---|---|---|---|
Axial skeleton involved | 11 (52) | 16 (76) | 7 (33) | 9 (43) | 10 (48) |
Distribution | |||||
Unilateral | – | 6 (38) | 3 (43) | 3 (33) | – |
Bilateral | – | 10 (63) | 4 (57) | 6 (67) | – |
Symmetric | – | 0 (0) | 0 (0) | 1 (17) | – |
Asymmetric | – | 10 (100) | 4 (100) | 5 (83) | – |
Type | |||||
Diffuse type | 4 (36) | 2 (13) | 0 (0) | 1 (11) | 0 (0) |
Homogeneous | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
Heterogeneous | 4 (100) | 2 (100) | 0 (0) | 1 (100) | 0 (0) |
Focal type | |||||
Nodular pattern | 8 (73) | 9 (56) | 1 (14) | 6 (67) | 10 (100) |
Solitary | 2 (25) | 1 (11) | 0 (0) | 3 (50) | 5 (50) |
Multiple | 6 (75) | 8 (89) | 1 (100) | 3 (50) | 5 (50) |
Patchy pattern | 6 (55) | 11 (69) | 6 (86) | 4 (44) | 0 (0) |
Solitary | 0 (0) | 5 (45) | 2 (33) | 4 (100) | 0 (0) |
Multiple | 6 (100) | 6 (55) | 4 (67) | 0 (0) | 0 (0) |
Fracture | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
Expansion | 0 (0) | 0 (0) | 4 (57) | 0 (0) | 0 (0) |