Fig. 1

Preoperative imaging of the liver tumors. The enhanced CT scan showed an 81 × 63-mm-sized tumor in segment 3 (a) (arrow). The rim of the tumor was enhanced, and the inside of nodules showed hypoattenuation. Another 17 × 12-mm-sized tumor was found in segment 5 (b, c) (triangle) in addition to the liver in segment 3 (arrow) on Gd-EOB-DTPA-MRI. Both tumors were highly enhanced in the early arterial phase (b), followed by washout in the delayed phase (c). CT computed tomography; Gd-EOB-DTPA gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid; MRI magnetic resonance imaging