Table 1 Patient, lesion, and procedure characteristics.

Characteristic	Overall, 503 patients (lesions = 515)
SD, standard deviation; ESD, endoscopic submucosal dissection.
Gender
Male	265 (52.7%)
Age (y)
Median (range)	66 (27–90)
Anticoagulant/antiplatelet use	119 (23.6%)
Endoscopic size of lesions (mean ± SD)	39 ± 18.7 mm
Lesion location	N = 515
Colon	221 (42.9%)
Esophagus	111 (21.5%)
Rectum	61 (11.8%)
Duodenum	45 (8.7%)
Stomach	42 (8.1%)
Ileocecal valve	17 (3.3%)
Appendix	16 (3.1%)
Jejunum	2 (0.3%)
Subepithelial tumor	13 (2.5%)
Lesion characteristics
Previous manipulation	42 (8.1%)
Previous tattoo	40 (7.7%)
Severe fibrosis	88 (17.0%)
Paris classification	N = 515 lesions
Is	228 (44.2%)
II a	130 (25.2%)
Ip	28 (5.4%)
II a+c	109 (21.1%)
Others	20 (3.8%)
Procedure characteristics
Use of a stabilization platform	119 lesions
Dilumen platform	98 (82.3%)
Pathfinder	110 (21.2%)
Use of traction	60 (11.6%)
Use of coagulation grasper	57 (11.06%)
ESD techniques	N = 515
ESD	405 (78.8%)
Hybrid ESD	110 (21.2%)
Closure methods	N = 515
No closure	101 (19.6%)
Clipping	322 (62.5%)
Suturing	92 (17.8%)