Table 1: Patient characteristics ( ).

Total ( )

Age (years) 66.3 ± 12.9
Gender, (%)
 Male59 (64.1)
 Female33 (35.9)
Tumor size (mm)37.2 ± 17.9
Tumor location, (%)
 Cecum8 (8.7)
 Right colon44 (47.8)
 Left colon17 (18.5)
 Rectum23 (25.0)
Macroscopic type, (%)
 LST-NG 35 (38.0)
 LST-G50 (54.3)
 Submucosal tumor7 (7.6)
Histology, (%)
 Carcinoid tumor 5 (5.4)
 Lipoma2 (2.2)
 Adenoma, high grade dysplasia39 (42.4)
 Adenocarcinoma sm15 (5.4)
 Adenocarcinoma sm25 (5.4)
 Adenocarcinoma mp4 (4.4)
 Adenocarcinoma m32 (34.8)
Nonlifting sign, (%)
 Negative73 (79.3)
 Positive19 (20.7)
Previous biopsy, (%)
 Negative63 (68.5)
 Positive29 (31.5)
Procedure time (minutes)59.0 ± 36.7

m: intramucosal cancer; sm1: submucosal invasion <1000  m; sm2: submucosal invasion ≥1000  m; mp: muscularis propriae invasion; LST-NG: laterally spreading tumors-nongranular type; LST-G: laterally spreading tumors-granular type.