Bleeding after endoscopic submucosal dissection: Risk factors and preventive methods

Table 2 Previous reports of bleeding after esophageal or colorectal endoscopic submucosal dissection

Ref.	Organ	Year	Case No.	Postoperative bleeding	Perforation	En block resection
Ono et al[25]	Esophagus	2009	107	0.0%	4.0%	100.0%
Isomoto et al[19]	Esophagus	2013	291	0.7%	0.0%	99.7%
Tsujii et al[20]	Esophagus	2015	373	0.0%	5.2%	96.7%
Saito et al[21]	Colon	2010	1111	1.5%	4.9%	88.0%
Niimi et al[79]	Colon	2010	310	1.6%	4.8%	90.3%
Oka et al[80]	Colon	2010	688	1.7%	3.3%	-
Toyonaga et al[22]	Colon	2012	1143	1.2%	1.4%	99.3%
Takeuchi et al[81]	Colon	2012	348	4.6%	2.3%	91.1%
Lee et al[24]	Colon	2013	1000	0.4%	5.3%	97.5%
Nakajima et al[23]	Colon	2013	816	2.2%	2.0%	94.5%