Efficacy and safety of endoscopic submucosal tunnel dissection for superficial esophageal neoplastic lesions: a systematic review and meta-analysis

Table 5 Comparison between endoscopic submucosal tunnel dissection and endoscopic submucosal dissection

Study	Country	Groups	Subjects, n	Mean age, years	Mean operation time, min	Tumor location			En bloc resection, n (%)	R0 resection, n (%)	Complications, n (%)
Study	Country	Groups	Subjects, n	Mean age, years	Mean operation time, min	Ht	Mt	Lt	En bloc resection, n (%)	R0 resection, n (%)	Complications, n (%)
Zhang et al. [12]	China	ESTD	52	61.7	93.21	27	20	5	50 (96.2)	44 (84.6)	Perforation 1, Cardiac mucosal laceration 3, Muscular damage 2, Total 5 (9.6)
Zhang et al. [12]	China	ESD	98	60.59	92.39	41	38	19	87 (88.78%)	85 (86.73%)	Perforation 1, Cardiac mucosal laceration 3, Muscular damage 4, Total 8 (8.2)
Huang et al. [19]	China	ESTD	38	58.7	38.0 (median)	3	22	13	38 (100)	38 (100)	Muscular injury 11, Chest pain 4, Total 15 (39.5)
Huang et al. [19]	China	ESD	77	59.1	45.0 (median)	12	35	30	76 (98.7%)	72 (93.5%)	Muscular injury 35, Post-procedure bleeding 1, Perforation 4, Chest pain 11, Total 51 (70.8)

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