Table 1.
Clinicopathologic Features of 601 cases of G1/G2 rectal NET.
| Gender | Male | 346 (57.6%) |
| Female | 255 (42.4%) | |
| Age (year) | Median 50 (18–83) | |
| Distance from anal verge (cm) | Median 5 (1–15) | |
| Tumor size (cm) | Median 0.7 (0.2-13.0) | |
| Tumor grade | G1 | 515 (85.7%) |
| G2 | 86 (14.3%) | |
| Invading depth | T0 | 399 (66.4%) |
| T1 | 114 (19.0%) | |
| T2 | 34 (5.7%) | |
| T3 | 31 (5.2%) | |
| T4 | 21 (3.5%) | |
| N stage | N0 | 536 (89.2%) |
| N1 | 65 (10.8%) | |
| M stage | M0 | 563 (93.7%) |
| M1 | 38 (6.3%) | |
| ENETS TNM stage | Ia | 392 (65.2%) |
| Ib | 108 (18.0%) | |
| II | 21 (3.5%) | |
| III | 42 (7.0%) | |
| IV | 38 (6.3%) | |
| Microvascular invasion | no | 293 (48.8%) |
| yes | 19 (3.2%) | |
| unknown | 289 (48.1%) | |
| Perineural invasion | no | 288 (47.9%) |
| yes | 19 (3.2%) | |
| unknown | 294 (48.9%) | |
| Surgical modality | none | 13 (2.1%) |
| EMR | 49 (8.2%) | |
| ESD | 196 (32.6%) | |
| TEM | 266 (44.3%) | |
| AR/APR/hartman | 77 (12.8%) | |
EMR, Endoscopic Mucosal Resection; ESD, Endoscopic Submucosal Dissection; TEM, Transanal Endoscopic Microsurgery; AR, Anterior Resection; APR, Abdomen Perineal Resection.