PMC

Five-year overall and GIST-specific survival rate was 87.7% and 94.4%, respectively. GIST = gastrointestinal stromal tumor

A. Metastatic tumors in segment 4 (arrows, axial CT) were surgically resected with sub-capsular metastatic tumors. B. Tumor (arrow) in right lobe could not be removed surgically because of risk of hepatic failure after extensive hepatectomy. C. Left lobectomy was performed to remove bulk of main metastases. D. IORFA (arrow) was performed for tumor located deep in right lobe. Partial hepatectomy (arrowhead) for sub-capsular tumor is visible. E. Axial CT image obtained five months after IORFA shows single recurrence (arrow) in right lobe. F. Axial CT image obtained 10 months after IORFA shows progression of multiple tumors and recurrence in remaining liver.

A. Metastatic tumor in left lateral segment (arrow on axial CT) was surgically resected. B. Two tumors (arrows) in right lobe were ablated because of suspected hepatic failure after extensive hepatectomy. C. Radiofrequency electrode (arrows) was placed in hepatic tumor under intraoperative ultrasound guidance. D. Echogenic bubble was noted at tip of electrode (arrow) during ablation. E. Coronal CT image obtained seven days after IORFA shows two ablated zones (arrows) with complete coverage. F. Coronal CT image obtained 13 months after IORFA shows no evidence of local tumor progression. Ablation zones (arrows) indicate considerable decrease in size. CT = computed tomography, IORFA = intraoperative radiofrequency ablation