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| MRI criteria | Benign (inflammatory and benign tumors) ( N = 17) |
Malignant ( N = 7) |
|---|---|---|
| Unilateral sinus lesion | 6 (35.5%) | 7 (100%) |
| Bone involvement | 4 (23.5%) | 5 (71.4%) |
| Tumor necrosis | 1 (5.8%) | 4 (57.1%) |
| Soft tissue mass | 2 (11.7%) | 5 (71.4%) |
| Lymphadenopathy | 3 (17.6%) | 5 (71.4%) |
| Involvement of surrounding structures | 4 (23.5) | 5 (71.4%) |
