Table 1.
Demographic and clinical data of the study patients
| Parameter | LLR group (n = 43) | OR group (n = 62) | Pvalue |
|---|---|---|---|
| Age | 64.4 ± 11.4 | 65.5 ± 11.5 | 0.309 |
| Sex male/female | 22/21 | 40/22 | 0.122 |
| Primary tumor | |||
| Colon/rectum | 24/19 | 40/22 | 0.243 |
| Node-positive | 24 (55.8%) | 44 (70.1%) | 0.083 |
| Liver metastasis | |||
| Metachronous/Synchronous | 30/13 | 18/41 | <0.001 |
| Size of largest tumor | |||
| <5 cm | 35 | 42 | |
| ≥5 cm | 8 | 20 | 0.094 |
| Number of lesions | |||
| 1 | 27 (62.8%) | 23 (37.1%) | 0.008 |
| 2 to 4 | 15 | 27 | |
| ≥5 | 1 | 12 | |
| Perioperative chemotherapy | 14 (32.6%) | 29 (46.8%) | 0.104 |
| Type of resection | |||
| Partial resection | 25 | 30 | |
| Left lateral sectionectomy | 11 | 7 | |
| Segmentectomy, sectionectomya | 4 | 12 | |
| Hemihepatectomy | 3 | 11 | |
| Extended hemihepatectomy | 0 | 2 | |
| Par, lat:seg, hmb | 36:7 | 37:25 | <0.001 |
| Operative time (min) | 333.9 ± 150.3 | 305.9 ± 107.1 | 0.149 |
| Operative blood loss (cc) | 287.3 ± 459.3 | 579.3 ± 392.0 | <0.001 |
| Perioperative blood transfusion | 1 (2.4%) | 13 (21.0%) | 0.004 |
| R1 resection | 0 (0.0%) | 4 (6.5%) | 0.117 |
| Postoperative hospital stay (days) | 7.3 ± 1.8 | 14.2 ± 7.0 | <0.001 |
| Complications (%) | 1 (2.4%) | 6 (9.7%) | 0.137 |
| Clavien classification [5] | |||
| I | 1 | 1 | |
| II | 0 | 3 | |
| III | 0 | 2 | |
| IV | 0 | 0 | |
| V | 0 | 0 |
aExcept left lateral sectionectomy; bPartial resection, left lateral sectionectomy: Segmentectomy, sectionectomy (except left lateral sectionectomy), hemi-hepatectomy.LLR, laparoscopic liver resection; OR, open liver resection.