Table 2.

Endoscopic findings and procedural characteristics of the 56 endoscopic submucosal dissections (ESDs) for early squamous cell carcinoma of the esophagus.

Localization of the lesion in the esophagus – n (%)
Upper third	6 (11%)
Middle third	32 (57%)
Lower third	18 (32%)
Paris classification – n (%)
0–IIa	21 (38%)
0–IIb	10 (18%)
0–IIc	1 (2%)
IIa–IIb	12 (21%)
IIa–IIc	10 (18%)
IIb–IIc	1 (2%)
0–Is	1 (2%)
En bloc resection – n (%)	55 (98%)
Circumference of the mucosal defect after ESD – n (%)
<50%	17 (31%)
50%–75%	12 (21%)
75%–<100%	21 (38%)
Circumferential	6 (11%)