The Setting of Regions of interest (ROIs) from the tumor border. After the tumor border was defined by contrast-enhanced MRI, regions of interest (ROIs) were set at intervals of 1 cm for the 5 cm long region from the tumor border in a direction free of biological barrier. SUV data by preoperative FDG-PET/CT in these regions were analyzed using VISIO KEOPSYS VIEWER (CODONICS: USA). Measurement was performed in at least two directions for each case. (Black arrow: tumor border defined by contrast-enhanced MRI).