Laparoscopic procedure is associated with lower morbidity for simultaneous resection of colorectal cancer and liver metastases: an updated meta-analysis

Pan, Long; Tong, Chenhao; Fu, Siyuan; Fang, Jing; Gu, Qiuxia; Wang, Shufeng; Jiang, Zhiyu; Juengpanich, Sarun; Cai, Xiujun

doi:10.1186/s12957-020-02018-z

Table 2 Clinicopathological characteristics of included studies

From: Laparoscopic procedure is associated with lower morbidity for simultaneous resection of colorectal cancer and liver metastases: an updated meta-analysis

Study	Intervention	Location of primary tumor (colon/rectum)	Primary tumor size, mean (SD), cm	No. of CRLM, mean (SD)	CRLM location (unilober/bilobar)	CRLM size	R0 rate (liver/colorectum)	Neoadjuvant therapy	Mortality	Conversions
Ma et al. [23]	Lap	7/5	NR	1.6 (0.9)	7/5	3.73 ± 2.91	100/100	3 (25)	0	0
Ma et al. [23]	Open	7/5	NR	3.1 (1.8)	5/2	3.02 ± 1.62	100/100	3 (25)	0
Ivanecz et al. [20]	Lap	4/6	NR	1.4 (0.9)	9/1	2.0 ± 1.2	100/100	7 (70)	0	0
Ivanecz et al. [20]	Open	6/4	NR	1.4 (0.9)	9/1	2.9 ± 1.5	100/100	3 (30)	0
Xu et al. [26]	Lap	15/5	3.2 (1.0)	6^a	18/2	2.99 ± 1.55	100/100	6 (30)	0	0
Xu et al. [26]	Open	15/5	3.8 (1.2)	6	17/3	3.19 ± 1.53	100/100	4 (20)	0
Chen et al [16].	Lap	NR/NR	4.0 (2.0)	4^a	NR	5.5 ± 4.2	NR/NR	NR	0	1
Chen et al [16].	Open	NR/NR	5.0 (3.0)	3	NR	4.7 ± 3.7	NR/NR	NR	0
Gorgun et al. [17]	Lap	6/8	3.7 (0.7)	1.6 (0.3)	12/2	2.4 ± 0.7	86/NR	6 (43)	0	0
Gorgun et al. [17]	Open	14/15	3.7 (0.5)	2.1 ± 0.2	19/10	2.7 ± 0.2	93/NR	19 (66)	1
Ratti et al [24].	Lap	13/12	NR	2.40 ± 1.27	13/12	3.65 ± 2.67	96/100	20 (80)	0	1
Ratti et al [24].	Open	27/23	NR	2.35 ± 1.34	27/23	3.94 ± 2.47	98/98	39 (78)	0
Tranchart et al. [25]	Lap	48/41	NR	1.4 ± 0.6	78/11	2.9 ± 1.9	83/NR	11 (12)	2	6
Tranchart et al. [25]	Open	51/38	NR	1.5 ± 0.7	81/8	2.8 ± 2.0	90/NR	20 (22)	0
Lin et al [22].	Lap	3/4	5.3 (1.1)	1.9 ± 0.9	NR	3.3 ± 1.8	100/NR	3 (27)	0	0
Lin et al [22].	Open	19/17	5.7 (1.9)	2.1 ± 1.0	NR	4.2 ± 2.2	100/NR	13 (36)	0
Jung et al [21].	Lap	18/6	5.23 (2.13)	NR	23/1	2.81 ± 1.72	100/96	NR	0	0
Jung et al [21].	Open	16/8	5.56 (1.93)	NR	18/6	3.23 ± 2.21	100/100	NR	0
Hu et al [18].	Lap	8/5	NR	NR	NR	3.2 ± 1.0	NR/NR	0 (0)	0	0
Hu et al [18].	Open	8/5	NR	NR	NR	3.5 ± 0.9	NR/NR	0 (0)	0
Huh et al [19].	Lap	7/13	4 (2–10)	2 (1–7)	17/3	2 (0.9–5.5)	100/NR	NR	0	0
Huh et al [19].	Open	11/9	4.7 (3–7)	2 (1–8)	16/4	2.4 (1–10)	100/NR	NR	0
Chen et al [15].	Lap	0/23	2.5 (0.9)	NR	NR	5.5 ± 1.2	NR/NR	NR	0	0
Chen et al [15].	Open	0/18	2.3 (1.0)	NR	NR	5.6 ± 1.4	NR/NR	NR	0

Lap Laparoscopic surgery, NR Not report
^aThe number of patients with CRLM ≥ 3

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