Can endoscopic submucosal dissection be safely performed in a smaller specialized clinic?

Table 1 Clinical characteristics and major complications of the endoscopic submucosal dissection patients

	Total	Esophagus	Stomach	Duodenum	Colorectum
Patients, n	873	59	681	4	129
Age (yr), mean (range)	69.9 (44-91)	68.0 (46-81)	70.9 (45-91)	65.5 (54-77)	65.9 (44-80)
Sex (male:female), n	549:324	52:7	408:273	2:2	87:42
Lesions, n	1047	64	850	4	129
Tumor size (mm), mean (range)	22.2 (2-150)	23 (4-46)	20.8 (2-150)	16.8 (9-31)	31.6 (2-92)
Tumor diagnosis and depth, n
Benign tumor	121	0	86	0	35
Cancer (m)	808	56	668	4	80
Cancer (sm1)	61	4	48	0	9
Cancer (sm2 or deeper)	57	4	48	0	5
En bloc resection rate, %	94.3	96.9	95.8	100	79.8
Operation time (min), mean (range)	46 (4-360)	62 (48-206)	42 (4-360)	90 (50-114)	60 (7-300)
Complications associated with ESD, n (%)
Perforation	12 (1.1)	1 (1.7)	9 (1.1)	1 (25.0)	1 (0.8)
Postoperative bleeding	53 (5.1)	0 (0.0)	51 (6.0)	1 (25.0)	1 (0.8)

ESD: Endoscopic submucosal dissection.