Table 3.

Characteristics of recurrence cases after endoscopic resection

	Location	Diameter (mm)	Macroscopic type	Treatment	En bloc/Piecemeal (n)	R0 status	Histology
1	Second	8	0-IIc	EMR-C	En bloc	RX	MC	HMX	VM0
2	Second	18	0-IIc	EMR-C	Piecemeal (3)	RX	MC	HMX	VM0
3	Second	18	0-IIa	EMR-C	Piecemeal (2)	RX	HGIN	HMX	VM0
4	Second	25	0-IIa	EMR-S	En bloc	R1	HGIN	HM1	VM0

EMR-C: Cap-assisted endoscopic mucosal resection; EMR-S: Conventional method with a snare; MC: Mucosal carcinoma; HGIN: High-grade intraepithelial neoplasia; RX: Involvement of the horizontal and/or vertical margin could not be assessed histopathologically; R1: Involvement of the horizontal and/or vertical margin histopathologically; HMX: Involvement of the horizontal margin could not be assessed histopathologically; HM1: Involvement of the horizontal margin histopathologically; VM0: No involvement of the vertical margin histopathologically.