Endoscopic Submucosal Tunnel Dissection for Large Gastric Neoplastic Lesions: A Case-Matched Controlled Study

Table 2

The characteristics of noncurative cancers in this study.

Case number	1	2	3	4
Age (years)	69	61	69	62
Gender	Male	Male	Female	Female
Location	Cardial LC	Cardial LC	LC of LGB	Cardial LC
Specimen size (mm)	50	40	50	50
Procedure	ESTD	ESTD	ESD	ESD
Pathology
Ulcer findings	None	None	None	None
Differentiation	tub2 > por	tub1	sig	tub1
Positive margin	None	VM (+)	None	None
Vascular invasion	Ly (+) v (+)	None	None	None
Depth	sm1	sm2	sm1	sm2
Supplemental therapy	None	Surgery	None	None
Total follow-up (months)	52 (alive)	51 (alive)	54 (alive)	40 (alive)
Endoscopic follow-up (months)	52	36	48	25
Recurrence	None	None	None	None

LGB: lower gastric body; Ly: lymphatic infiltration; v: venous infiltration; VM: vertical margin involvement; m: intramucosal cancer; sm1: invasion depth < 500 μm from the lower margin of the muscularis mucosa; sm2: invasion depth ≥ 500 μm; tub1: well-differentiated adenocarcinoma; tub2: moderately differentiated adenocarcinoma; por: poorly differentiated adenocarcinoma; sig: signet ring cell carcinoma. There was no residual cancer tissue found from the resected specimen after supplemental surgery.