TABLE 1.
Cohort characteristics
| Patients characteristicslc | |
| Number, n | 623 |
| Sex male : Female, n (%) | 360 (57.8) : 263 (42.2) |
| Mean age, years (min‐max) | 69.3 (34–96) |
| Lesions characteristics | |
| Number, n | 663 |
| Mean size, mm (min‐max) | 57.9 (20–210) |
| >40 mm, n (%) | 532 (80.2) |
| >50 mm, n (%) | 371 (56%) |
| Location, n (%) | |
| Recto‐sigmoid | 290 (43.7) |
| Descending colon | 56 (8.5) |
| Transverse colon | 45 (6.5) |
| Ascending colon | 271 (40.9) |
| Characterization data, n (%) | |
| Macroscopic type | |
| Protruding lesion | 85 (12.8) |
| G‐LST | 440 (66.4) |
| NG‐LST | 126 (19) |
| Macronodule >1 cm | 354 (53.4) |
| Depressed area (Paris 0‐IIC) | 92 (13.9) |
| Sano IIIA/Kudo Vi | 265 (40) |
| CONECCT IIA | 146 (22) |
| CONECCT IIC | 504 (76) |
| Histology, n (%) | |
| V3 – LGD | 216 (32.6) |
| V4 – pTis | 376 (57) |
| V5 – pT1a <1000 um | 29 (4.4) |
| V5 – pT1a >1000 um | 26 (3.9) |
| ≥pT2 | 4 (0.6) |
| Details of sumucosal cancer | |
| Low risk submucosal cancer (<1000, LV‐, budding‐) | 15 (2.3%) |
| High risk submucosal cancer (>1000 or LV + or budding +) | 39 (5.9%) |
| “Intermediate risk” (>1000 and <2000, LV‐ and budding ‐) | 9 (1.4%) |
| ESD procedure, n (%) | |
| Duration of procedure (min) | 49 (IQR 30–92) |
| En bloc resection | 640 (96.4%) |
| R0 resection | 565 (85.1%) |
| Curative | 538 (81.1%) |
| Intra‐operative perforation | 48 (7%) |
| lesions <5 cm | 9 (3%) |
| lesions >5 cm | 34 (9.1%) |
| Secondary surgery | 46 (7%) |
| Secondary surgery for complications | 6 (0.9%) |
Abbreviations: CONECCT, COlorectal NEoplasia Endoscopic Classification to Choose the Treatment; LV, lymphovascular.