Table 1 The clinical and clinicopathologic characteristics of the patients who underwent endoscopically complete resection for rectal NETs
From: Clinical outcomes of endoscopic mucosal resection for rectal neuroendocrine tumor
Variables | No. |
|---|---|
Age, median (range), years | 50.9 (26–79) |
Gender, male | 170 (61.4%) |
Endoscopic appearance | Â |
 Polyp | 22 (7.9%) |
 Submucosal tumor | 255 (92.1%) |
Distance from anal verge, median (range), cm | 7.1 (1–16) |
Treatment modalities | Â |
 Conventional EMR | 243 (87.7%) |
 EMR-D | 23 (8.3%) |
 EMR-P | 11 (4.0%) |
En-bloc resection | 274 (98.9%) |
Tumor size, median (range), mm | 4.96 (1–22) |
Group according to tumor size (%) | Â |
 < 10 mm | 256 (92.4%) |
 10–19 mm | 20 (7.3%) |
 ≥20 mm | 1 (0.3%) |
Histologically complete resection | 206(74.4%) |
 Negative lateral margin | 240 (86.6%) |
 Negative deep margin | 211 (76.1%) |
Lymphovascular invasion | Â |
 Yes | 14 (5.1%) |
 No | 237 (85.5%) |
 Indeterminate | 28 (9.4%) |
Grade | Â |
 Gr1 | 246 (88.8%) |
 Gr2 | 3 (1.1%) |
 Not described | 30 (10.8%) |
Mitotic count | Â |
 <  2/10 | 202 (72.9%) |
 ≥ 2/10 | 9 (3.2%) |
 Not described | 66 (23.8%) |
Presence of synchronous rectal NETs | 3 (1.1%) |
Tumor depth | Â |
 Limited to mucosa | 5 (1.8%) |
 Submucosa | 264 (95.3%) |
 Muscularis propra or deeper | 0 (0%) |
 Indeterminate | 8 (2.9%) |
Follow-up | 183 (66.1%) |
 Follow-up duration, median (range), months | 32.1 (2.3–146.0) |