Comparative study and systematic review of laparoscopic liver resection for hepatocellular carcinoma

Table 2 Perioperative data n (%)

Variable	LLR (n = 42)	OLR (n = 110)	P value
Type of resection			< 0.001
Right hepatectomy	4 (9.5)	33 (30.0)
Left hepatectomy	4 (9.5)	11 (10.0)
Extended right hepatectomy	0 (0.0)	9 (8.2)
Extended left hepatectomy	0 (0.0)	6 (5.5)
Right anterior sectionectomy	0 (0.0)	2 (1.8)
Right posterior sectionectomy	6 (14.3)	2 (1.8)
Left lateral sectionectomy	8 (19.0)	3 (2.7)
Wedge resection	6 (14.3)	10 (9.1)
Segmentectomy	14 (33.3)	31 (28.2)
Others	0 (0.0)	3 (2.7)
Conversion from LLR to OLR	5 (11.9)	-	-
Duration of operation (min), means ± SD	250.43 ± 98.85	349.90 ± 132.29	< 0.001
Intra-operative blood loss (mL), mean ± SD	495.83 ± 501.94	1085.00 ± 943.55	< 0.001
Blood transfusion	4 (9.5)	43 (39.1)	< 0.001
Amount transfused (mL), mean ± SD	709.25 ± 726.18	1349.30 ± 1532.32	0.269

LLR: Laparoscopic liver resection; OLR: Open liver resection.