Efficacy of laparoscopic liver resection in colorectal liver metastases and the influence of preoperative chemotherapy

Table 1 Demographic and clinical data of the study patients

Parameter	LLR group (n = 43)	OR group (n = 62)	P value
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, sectionectomy^a	4	12
Hemihepatectomy	3	11
Extended hemihepatectomy	0	2
Par, lat:seg, hm^b	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.

ISSN: 1477-7819