Table 2. Tumor and treatment characteristics of primary and secondary hepatic metastases treated with IRE (N=77).
| Variable (N=77) | N (%) | |
|---|---|---|
| Tumor Size (cm) | Median (range) | 1.3 (0.5-6) |
| Lesion Pathology | ||
| Colorectal | 57 (74) | |
| Hepatocellular | 7 (9) | |
| Leiomyosarcoma | 5 (6) | |
| Neuroendocrine | 4 (5) | |
| Ampullary | 3 (4) | |
| Cholangiocarcinoma | 1 (1) | |
| Distance to Major Vasculature | ||
| < 3mm | 55 (71.4) | |
| 3-5mm | 14 (18.2) | |
| 5-10mm | 2 (2.6) | |
| >10mm | 6 (7.8) | |
| Close to 1st degree bile duct | No | 53 (68.8) |
| Yes | 24 (31.2) | |
| IRE treatments per Lesion | Median (range) | 2 (1-7) |
| Ablation Zone Size (cm) | Median (range) | 3 (1.5-8) |
| IRE Combined with Other Procedures | 63 (82) | |
| Non-anatomic hepatectomy | 50 (64) | |
| Left lateral segmentectomy | 10 (13) | |
| Caudate lobectomy | 5 (6) | |
| Right lobectomy | 2 (3) | |
| Segmentectomy | 13 (17) | |
| Cholecystectomy | 8 (10) | |
| Microwave ablation | 32 (41) | |
| Radiofrequency ablation | 2 (3) | |
| Distal pancreatectomy | 3 (4) | |
| Partial gastrectomy | 1 (1) | |
| Placement of hepatic arterial infusion pump | 15 (19) | |