Table 4.
Orbital MRI findings of OPNs with CTD.
| Orbital MRI finding | Graves' disease (n = 12) | IgG-4 (n = 10) | GAP (n = 4) | SLE (n = 2) | Sarcoidosis (n = 1) | Rheumatoid disease (n = 1) | Scleroderma (n = 1) | Behcet's disease (n = 1) | Gout (n = 1) |
|---|---|---|---|---|---|---|---|---|---|
| Abnormal contrast enhancement surrounding the intraorbital optic nerve | 12 | 10 | 4 | 2 | 1 | 1 | 1 | 1 | 1 |
| Orbit fat infiltration | 12 | 10 | 4 | 2 | 1 | 1 | 1 | 1 | 1 |
| Myositis | 12 | 5 | 4 | 0 | 1 | 0 | 0 | 0 | 0 |
| Trigeminal nerve branch involvement | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pterygopalatine fossa pseudotumor | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dacryoadenitis | 10 | 10 | 4 | 0 | 1 | 0 | 0 | 0 | 0 |
| Maxillary sinus disease | 1 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| Paranasal sinus disease | 1 | 7 | 4 | 0 | 1 | 0 | 0 | 0 | 0 |
| Otitis mastoidea | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pachymeningitis | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
GAP, Granulomatosis with Polyangiitis; SLE, systemic lupus erythematosus; IgG-4 RD, immunoglobulin G4-related disease.