Table 2.
Outcomes of 83 microwave ablation procedures, by primary tumour type
| Variable | HCC | CLM | MC | Other cancer | Total | P-value |
|---|---|---|---|---|---|---|
| n = 10 | n = 39 | n = 20 | n = 14 | n = 83 | ||
| Complete ablation, n (%) | .006 | |||||
| Yes | 9 | 38 | 14 | 14 | 75 (90) | |
| No | 1 | 1 | 6 | 8 (10) | ||
| No. patients with complication, n (%) | .747 | |||||
| No complication | 8 | 34 | 16 | 12 | 70 (84) | |
| Grade 1–2 | 1 | 3 | 3 | 1 | 8 (10) | |
| Grade ≥3 | 1 | 2 | 1 | 1 | 5 (6) | |
| Median hospital stay, days (range) | 2 (1–11) | 6 (1–34) | 6 (5–24) | 5 (1–7) | 5 (1–34) | .003 |
| Recurrence, n (%) | .039 | |||||
| Persistent disease after ablation | 1 | 3 | 9 | 1 | 14 (17) | |
| No recurrence | 6 | 15 | 3 | 8 | 32 (39) | |
| Recurrence at ablation site only | 1 | 6 | 2 | 1 | 10 (12) | |
| Remote hepatic recurrence only | 1 | 7 | 6 | 3 | 17 (20) | |
| Extrahepatic recurrence only | 3 | 1 | 4 (5) | |||
| Intra- and extrahepatic recurrence | 1 | 5 | 6 (7) | |||
| Recurrence-free survival | .407 | |||||
| Median, months | NR | 10.9 | 24.4 | 17.9 | 18.1 | |
| 1-year, % | 59 | 47 | 76 | 58 | 59 | |
| 3-year, % | NR | 29 | 29 | 14 | ||
| Overall survival | .862 | |||||
| Median, months | NR | 36.1 | 33.0 | NR | 36.1 | |
| 1-year, % | 83 | 92 | 94 | 100 | 95 | |
| 3-year, % | NR | 35 | 43 | 75 | 41 |
HCC, hepatocellular carcinoma; CLM, colorectal liver metastases; MC, metastatic carcinoid; NR, not reached.