Meta-analysis comparing differing methods of endoscopic therapy for colorectal lesions

Table 2 Colorectal lesion characteristics

Ref.	Lesion size [mean ± SD (range) mm]		Operating time [mean or median ± SD (range) min]		Lesion location (EMR: ESD cases)			Lesion type (EMR:ESD cases)
	EMR	ESD	EMR	ESD	Left colon	Right colon	Rectum	Sessile	Depressed	Protruding	LST-G	LST-NG	LST-F	Recurrence
Tajika et al[22]	25.5 ± 6.8 (20-55)	31.6 ± 9 (20-54)	29.4 ± 26.1 (3-115)	87.2 ± 49.7 (19-256)	41:13	35:41	28:31		0:1	68:10	28:33	7:38		1:3
Lee et al[23]	21.7 ± 3.5 (20-40)	28.9 ± 12.7 (20-145)	-	54.73 ± 40.9 (6-321)	41:82	82:172	0.75	36:73			49:129	55:112
Kobayashi et al[24]	25 ± 9	27.1 ± 10.1	11 (2-280)	140 (45-400)	26:14	15:6	15:8			12:0	22:6	22:20		0:6
Saito et al[25]	28 ± 8 (20-95)	37 ± 14 (20-140)	29 ± 25 (3-120)	108 ± 7 (15-360)	52:28	89:44	110:73	80:5	0:2		114:62	34:71
Kim et al[26]	-	-	-	-	-	-	-				28:48	6:16	22:2
Tamegai et al[19]	28.7 (20-60)	32.1 (13-75)	-	61.1 (7-164)	-:28	-:26	-:17		0:2	12:19

EMR: Endoscopic mucosal resection; ESD: Endoscopic submucosal dissection; LST-G: Laterally spreading tumour granular type; LST-NG: Laterally spreading tumour nodular granular type; LST-F: Laterally spreading tumour flat type.