Table 1 Patient characteristics
total | no LR | LR | p-value | |||||
n | n | n | ||||||
total | 18 | 9 | 9 | |||||
age | mean (SD) | 63.1 | ±10.9 | 61.8 | ±7.6 | 64.3 | ±13.8 | 0.64 |
sex | male | 11 | 61% | 6 | 67% | 5 | 56% | 0.63 |
female | 7 | 39% | 3 | 33% | 4 | 44% | ||
previous CRLM surgery | yes | 9 | 50% | 5 | 56% | 4 | 44% | 0.64 |
no | 9 | 50% | 4 | 44% | 5 | 56% | ||
occurrence of CRLM | metachronous | 7 | 39% | 3 | 33% | 4 | 44% | 0.63 |
synchronous | 11 | 61% | 6 | 67% | 5 | 56% | ||
days preoperative CT scan - RFA procedure | mean (SD) | 32.2 | ±17.2 | 27.9 | ±15.8 | 36.4 | ±18.4 | 0.31 |
year of RFA | 2009–2011 | 7 | 39% | 4 | 44% | 3 | 33% | 0.63 |
2012–2014 | 11 | 61% | 5 | 56% | 6 | 67% | ||
lesion size (mm) | median (range) | 22 | 8–42 | 22 | 8–31 | 25 | 11–42 | 0.17 |
categorized lesion size | < 21 mm | 8 | 44% | 4 | 44% | 4 | 44% | 1.00 |
> 20 mm | 10 | 56% | 5 | 56% | 5 | 56% | ||
liver half and segment | ||||||||
left | segment 2 | 1 | 6% | 1 | 11% | 0.14 | ||
segment 3 | 1 | 6% | 1 | 11% | ||||
segment 4 | 5 | 27% | 1 | 11% | 4 | 45% | ||
right | segment 5 | 2 | 11% | 1 | 11% | 1 | 11% | |
segment 6 | 1 | 6% | 1 | 11% | ||||
segment 7 | 4 | 22% | 3 | 33% | 1 | 11% | ||
segment 8 | 4 | 22% | 3 | 33% | 1 | 11% | ||
follow-up (months) | mean (SD) | 44.7 | ±20.5 | 52.3 | ±14.8 | 37.3 | ±23.5 | 0.13 |
survival | death | 5 | 28% | 1 | 11% | 4 | 44% | 0.11 |