Risk factors for Mallory-Weiss Tear during endoscopic submucosal dissection of superficial esophageal neoplasms

Table 4 Clinical characteristics of patients who developed Mallory-Weiss Tear during endoscopic submucosal dissection

Patients	Age in yr	Sex	Location	Circumfe-rential of mucosal defect	Procedure time in min	Expert	Endoscopic treatment of MWT	Invasion depth	Submucosal adhesion
Case 1	72	F	M	3/5	60	Y	-	Tis	N
Case 2	61	M	L	3/4	69	Y	-	Tis	N
Case 3	63	F	M	1/2	28	Y	-	Tis	N
Case 4	47	M	L	1/3	45	Y	-	LGIN	N
Case 5	65	F	M	3/4	90	N	-	HGIN	N
Case 6	64	F	M	4/5	98	Y	-	M2	Y
Case 7	51	F	M	4/5	121	Y	E & APC1	M2	N
Case 8	66	F	M	2/3	125	N	-	Tis	N
Case 9	64	F	M	4/5	175	N	-	Tis	N
Case 10	77	M	L	1	180	N	APC	SM, 550 μm	N
Case 11	60	F	M	1/4	45	N	-	LGIN	N
Case 12	67	F	M	2/3	100	N	APC	SM, 100 μm	N
Case 13	67	M	L	1/2	90	N	-	M3	N
Case 14	57	M	M	5/6	155	N	APC	M2	N
Case 15	69	F	M	1/2	57	Y	Clips	HGIN	Y
Case 16	66	F	M	1/2	40	Y	Clips	Tis	Y
Case 17	67	M	L	1	105	Y	Clips and loop	M2	N
Case 18	65	F	M	2/3	89	Y	-	M2	N
Case 19	64	F	U	1	150	Y	-	M2	N
Case 20	67	F	U	2/3	90	N	-	SM, 220 μm	N

¹Sprinkle of epinephrine solution (1:10000) and argon plasma coagulation treatment in the emergency endoscopy 10 h after endoscopic submucosal dissection. MWT: Mallory-Weiss Tear; Tis: Tumor in situ; LGIN: Low-grade intraepithelial neoplasia; HGIN: High-grade intraepithelial neoplasia; APC: Argon plasma coagulation; M2: Lesion limited to laminae mucosa; SM: Lesion infiltration submucosa; F: Female; M: Male; U: Upper esophagus; M: Middle esophagus; L: Lower esophagus.