Table 2.
Intraoperative data for patients in both groups, n (%)
|
|
Overall (n = 256)
|
Conventional LLR (n = 150)
|
Novel LLR (n = 106)
|
P value
|
| Tumor size, cm | 5.03 ± 2.88 | 4.01 ± 2.33 | 6.47 ± 2.96 | < 0.001 |
| Tumor location | 31 (12.1) | 15 (10.0) | 16 (15.1) | 0.218 |
| S II | 23 (9.0) | 12 (8.0) | 11 (10.4) | |
| S III | 39 (15.2) | 27 (18.0) | 12 (11.3) | |
| S IV | 46 (18.0) | 32 (21.3) | 14 (13.2) | |
| S V | 37 (14.5) | 19 (12.7) | 18 (17.0) | |
| S VI | 33 (12.9) | 18 (12.0) | 15 (14.2) | |
| S VII | 36 (14.1) | 22 (14.7) | 14 (13.2) | |
| S VIII | 2 (0.8) | 2 (1.3) | 0 (0.0) | |
| S II/III | 9 (3.5) | 3 (2.0) | 6 (5.7) | |
| Type of resection | 48 (18.8) | 36 (24.0) | 12 (11.3) | 0.051 |
| S5 + S6 + S7 + S8 | 43 (16.8) | 25 (16.7) | 18 (17.0) | |
| S2 + S3 + S4 | 38 (14.8) | 22 (14.7) | 16 (15.1) | |
| S6 + S7 | 35 (13.7) | 23 (15.3) | 12 (11.3) | |
| S6 + S7 + S5v + S8v | 38 (14.8) | 16 (10.7) | 22 (20.8) | |
| S7 | 27 (10.5) | 16 (10.7) | 11 (10.4) | |
| S7 + S8 | 27 (10.5) | 12 (8.0) | 15 (14.2) | |
| Operative time, minute | 236.34 ± 81.08 | 262.33 ± 83.90 | 199.57 ± 60.37 | < 0.001 |
| Blood loss | 298.57 ± 128.82 | 363.34 ± 131.27 | 206.92 ± 37.09 | < 0.001 |
| Number of lesions | 0.165 | |||
| 1 | 251 (98.0) | 145 (96.7) | 106 (100.0) | |
| 2 | 3 (1.2) | 3 (2.0) | 0 (0.0) | |
| 3 | 2 (0.8) | 2 (1.3) | 0 (0.0) | |
| Distance from major vessels | 0.944 | |||
| > 1 cm | 189 (73.8) | 110 (73.3) | 79 (74.5) | |
| < 1 cm | 67 (26.2) | 40 (26.7) | 27 (25.5) | |
| Distance from liver capsule | 0.899 | |||
| < 1 cm | 128 (50.0) | 76 (50.7) | 52 (49.1) | |
| > 1 cm | 128 (50.0) | 74 (49.3) | 54 (50.9) | |
| Preoperative resection volume, mL | 297.81 ± 50.90 | 264.38 ± 31.98 | 345.11 ± 31.40 | < 0.001 |
| PRLV/TLV | 30.58 ± 10.06 | 30.37 ± 10.21 | 30.87 ± 9.89 | 0.697 |
| Minimum surgical margin width, mm | 18.95 ± 6.33 | 18.96 ± 6.27 | 18.94 ± 6.45 | 0.984 |
| Total pringle maneuver time, minute | 44.93 ± 10.53 | 45.12 ± 10.49 | 44.67 ± 10.64 | 0.737 |
| ICG staining method | 0.887 | |||
| None | 176 (68.8) | 104 (69.3) | 72 (67.9) | |
| Negative staining | 52 (20.3) | 29 (19.3) | 23 (21.7) | |
| Positive staining | 28 (10.9) | 17 (11.3) | 11 (10.4) | |
| Blood transfusion | 0.761 | |||
| No | 253 (98.8) | 149 (99.3) | 104 (98.1) | |
| Yes | 3 (1.2) | 1 (0.7) | 2 (1.9) | |
| R0 resection Y | 256 (100.0) | 150 (100.0) | 106 (100.0) | NA |
LLR: Laparoscopic liver resection; PRLV/TLV: Preoperative resection volume/total liver volume; ICG: Indocyanine green; NA: Not available.