Fig. 1 
The receiver operating characteristics (ROC) curve used for differentiation between benign and malignant mediastinal lesions based on maximum standardized uptake value (SUV
 max 
). ROC analysis showed that the optimal cutoff value in these patients was 4.61 for SUV
 max 
(area under the curve: 0.841, 95% confidence interval: 0.793–0.965,
 p 
 = 0.0001).
