Pathological and oncological outcomes of pylorus-preserving versus conventional distal gastrectomy in early gastric cancer: a systematic review and meta-analysis

Hou, Sen; Liu, Fan; Gao, Zhidong; Ye, Yingjiang

doi:10.1186/s12957-022-02766-0

Table 1 Demographic of the included studies

From: Pathological and oncological outcomes of pylorus-preserving versus conventional distal gastrectomy in early gastric cancer: a systematic review and meta-analysis

Study, year	Country	Duration	Study design	Group	Method	Patients	Age (year)	Sex(male/female)	Pyloric cuff (cm)	Nerve preserved in PPG	Reconstructions	Lymphadenectomy D0/D1/D1+ /D2/D3
Zhang, 1998 [33]	China	1993–1995	RCS	PPG	NR	15	58.9 (9.4)	11/4	1.5	PB	Gastrogastrostomy	NR
Zhang, 1998 [33]	China	1993–1995	RCS	CDG	NR	28	58.0 (17.1)	21/7			B-I	NR
Shibata, 2004 [34]	Japan	1994–1996	RCT	PPG	NR	36	64 (1)	23/13	1.5	PB	Gastrogastrostomy	2/4/25/5/0
Shibata, 2004 [34]	Japan	1994–1996	RCT	CDG	NR	38	60 (2)	25/13			NR	1/13/19/5/0
Kong, 2009 [19]	Korea	2003–2008	RCS	PPG	NR	64	NR	NR	NR	NR	NR	NR
Kong, 2009 [19]	Korea	2003–2008	RCS	CDG	NR	1380	NR	NR		NR	NR	NR
Ikeguchi, 2010 [35]	Japan	1997–2007	RCS	PPG	O/Lap	46	62.8 (NR)	24/22	NR	HB PB	Gastrogastrostomy	NR
Ikeguchi, 2010 [35]	Japan	1997–2007	RCS	CDG	O/Lap	87	64.2 (NR)	56/31			B-I	NR
Kim, 2014 [17]	Korea	2006–2012	RCS	PPG	NR	21	51.95 (NR)	13/8	NR	NR	NR	NR
Kim, 2014 [17]	Korea	2006–2012	RCS	CDG	NR	109	55.8 (NR)	68/41		NR	NR	NR
Suh, 2014 [36]	Korea	2003–2011	RCS	PPG	Lap	116	54.1 (12.3)	55/61	NR	HB	Gastrogastrostomy	NR
Suh, 2014 [36]	Korea	2003–2011	RCS	CDG	Lap	176	59.1 (12.0)	107/69		HB	B-I B-II RY	NR
Hu, 2015 [37]	China	2004–2009	RCS	PPG	NR	46	56.3 (11.4)	28/18	NR	HB	Gastrogastrostomy	NR
Hu, 2015 [37]	China	2004–2009	RCS	CDG	NR	85	60.1 (12.3)	55/30		HB	B-I	NR
Hu, 2016 [38]	China	2003–2010	RCS	PPG	Lap	35	55.0 (10.5)	19/16	NR	HB CB	Gastrogastrostomy	0/4/21/8/2
Hu, 2016 [38]	China	2003–2010	RCS	CDG	Lap	25	60.3 (13.0)	15/10		HB CB	B-I	0/8/10/6/1
Aizawa, 2017 [39]	Japan	2006–2012	RCS	PPG	NR	502	60.7 (9.6)	301/201	NR	CB	Gastrogastrostomy	0/502/0/0/0
Aizawa, 2017 [39]	Japan	2006–2012	RCS	CDG	NR	502	61.7 (11.4)	309/193			B-I B-II RY	0/264/0/128/0
Hosoda, 2017 [14]	Japan	2006–2011	RCS	PPG	Lap	32	64.0 (9.5)	13/19	4.0	CB	Gastrogastrostomy	NR
Hosoda, 2017 [14]	Japan	2006–2011	RCS	CDG	Lap	32	63.2 (8.8)	13/19			B-I	NR
Xia, 2018 [40]	China	2016–2017	RCS	PPG	Lap	46	57.9 (11.0)	23/23	3.0–4.0	HB	NR	NR
Xia, 2018 [40]	China	2016–2017	RCS	CDG	Lap	66	53.0 (13.4)	35/31		HB	NR	NR
Eom, 2019 [41]	Korea	2012–2015	RCS	PPG	Lap	101	58.3 (12.0)	54/47	3.0–5.0	HB PB	Gastrogastrostomy	NR
Eom, 2019 [41]	Korea	2012–2015	RCS	CDG	Lap	195	56.5 (11.8)	114/81		HB PB	B-II	NR
Xia, 2019 [42]	China	2015–2017	RCS	PPG	Lap	70	56.8 (10.9)	46/24	>3.0	HB CB	Gastrogastrostomy	NR
Xia, 2019 [42]	China	2015–2017	RCS	CDG	Lap	97	57.5 (12.1)	63/34		HB CB	B-I	NR
Zhu, 2019 [43]	Korea	2013–2016	RCS	PPG	NR	145	NR	67/78	3.0–5.0	HB	NR	NR
Zhu, 2019 [43]	Korea	2013–2016	RCS	CDG	NR	61	NR	34/27		HB	NR	NR
Huang, 2020 [44]	China	2015–2017	RCS	PPG	Lap	40	60.5 (11.0)	25/15	>3.0	HB	Gastrogastrostomy	NR
Huang, 2020 [44]	China	2015–2017	RCS	CDG	Lap	51	62.8 (10.2)	39/12		HB	B-I	NR
Park, 2021 [45]	Korea	2015–2017	RCT	PPG	Lap	124	55.6 (10.6)	58/66	4.1 (0.9)	HB CB	Gastrogastrostomy	0/0/124/0/0
Park, 2021 [45]	Korea	2015–2017	RCT	CDG	Lap	129	58.1 (10.2)	67/62		HB CB	B-I B-II RY	0/0/127/2/0

Continuous variables are recorded as mean (SD)
RCS retrospective cohort study, RCT randomized controlled trial, PPG pylorus preserving gastrectomy, CB celiac branch, HB hepatic branch, PB pyloric branch, O open surgery, Lap laparoscopic surgery, NR not reported, B-I Billroth-I reconstruction, B-II Billroth-II reconstruction, RY Roux-en-Y reconstruction, D1, No. 1, 3, 4sb, 4d, 5, 6, 7; D1+, D1 + No. 8a, 9; D2, D1 + No. 8a, 9, 11p, 12a

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ISSN: 1477-7819

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