Table 1.

Biopsy during SEMS placement procedure

First author	Country	Year	Study type	n	Type of endoscopist	Location of malignancy	Recommends biopsy
Alshammari [12]	Saudi Arabia	2020	CR	1	GE	Left colon	N/A
Berselli [13]	Italy	2019	RS	33	GE	Left colon, splenic, or hepatic flexure	N/A
Bonfante [14]	Italy	2012	RS	45	S	Left colon, rectum	N/A
Donlon [15]	Ireland	2019	RS	103	N/A	All locations	N/A
Dulucq [16]	France	2006	PS	14	GE	Left colon, right colon, rectum	N/A
Feo [17]	USA	2011	R	-	N/A	Left colon, right colon	N/A
Fernández-Esparrach [18]	Spain	2010	RS	39	GE	Left colon, rectum	N/A
Gianotti [19]	Italy	2013	PS	83	GE	Left colon, right colon	N/A
Han [20]	China	2020	RS	14	S	Left colon, splenic flexure	N/A
Jost [21]	Switzerland	2007	RS	67	N/A	Left colon, splenic flexure, rectum	Yes
Keymling [39]	Germany	2003	R	-	N/A	All locations	N/A
Kuwai [22]	Japan	2018	PS	501	N/A	Left colon, right colon	N/A
Könes [23]	Turkey	2019	RS	21	GS	Splenic or hepatic flexure	N/A
Lee [24]	South Korea	2012	RS	88	GE	Left colon, right colon, rectum	N/A
Li [40]	China	2019	RS	26	GE	Left colon, splenic flexure, rectum	N/A
Liu [25]	China	2019	CR	6	CS	Left colon, rectum	N/A
Matsuda [26]	Japan	2016	RS	28	CS	Left colon, right colon, rectum	N/A
Matsuda [27]	Japan	2019	RS	25	S	Left colon, right colon, rectum	N/A
Matsuzawa [28]	Japan	2015	PS	513	GE	All locations	No
Pacheco-Barcia [29]	Spain	2019	RS	78	N/A	Left colon, transverse colon	N/A
Repici [30]	Italy	2006	R	-	N/A	Left colon, right colon	N/A
Repici [31]	Italy	2008	PS	42	N/A	All locations	N/A
Saito [32]	Japan	2015	PS	296	N/A	Left colon, right colon, rectum	No
Soto [33]	Spain	2006	RS	62	N/A	Left colon, right colon, rectum	N/A
Stipa [34]	Italy	2007	PS	30	N/A	Left colon, splenic or hepatic flexure, rectum	N/A
Tomita [35]	Japan	2019	PS	404	N/A	Left colon, right colon, rectum	No
van den Berg [36]	The Netherlands	2014	RS	59	GE	Left colon, right colon, splenic flexure	N/A

Study type: CR case report, RS retrospective study, PS prospective study, R review

Type of endoscopist: GE gastroenterologist, CS colorectal surgeon, GS general surgeon, S surgeon (not specified)