Table 2. Per-Polyp Comparisons of Endoscopic and Histological Features in the Rebleeding Positive and Negative Groups.
| Endoscopic feature | Total (n=308) | Rebleeding | P-value | |
|---|---|---|---|---|
| Negative group (n=291) | Positive group (n=17) | |||
| Polyp size (mm) | 12.5±13.7 | 12.2±13.3 | 18.0±18.5 | 0.217 |
| Polyp location | 0.329 | |||
| Cecum | 15 (4.9) | 13 (4.5) | 2 (11.8) | |
| Ascending colon | 95 (30.8) | 92 (31.6) | 3 (17.6) | |
| Transverse colon | 39 (12.7) | 37 (12.7) | 2 (11.8) | |
| Descending colon | 27 (8.8) | 27 (9.3) | 0 | |
| Sigmoid colon | 76 (24.7) | 71 (24.4) | 5 (29.4) | |
| Rectum | 56 (18.2) | 51 (17.5) | 5 (29.4) | |
| Polyp morphology | 0.775 | |||
| Is | 198 (64.3) | 188 (64.6) | 10 (58.8) | |
| Ip | 41 (13.3) | 39 (13.4) | 2 (11.8) | |
| IIa | 69 (22.4) | 64 (22.0) | 5 (29.4) | |
| Method of resection | 0.034 | |||
| EMR | 245 (79.5) | 235 (80.8) | 10 (58.8) | |
| EPMR | 21 (6.8) | 17 (5.8) | 4 (23.5) | |
| ESD | 11 (3.6) | 10 (3.4) | 1 (5.9) | |
| Hybrid ESD | 7 (2.3) | 6 (2.1) | 1 (5.9) | |
| CSP | 24 (7.8) | 23 (7.9) | 1 (5.9) | |
| Histologic finding | 0.002 | |||
| Tubular adenoma | 205 (66.6) | 200 (68.7) | 5 (29.4) | |
| Villotubular adenoma | 26 (8.4) | 24 (8.2) | 2 (11.8) | |
| Hyperplastic polyp | 17 (5.5) | 15 (5.2) | 2 (11.8) | |
| Serrated adenoma | 13 (4.2) | 12 (4.1) | 1 (5.9) | |
| Adenocarcinoma | 21 (6.8) | 17 (5.8) | 4 (23.5) | |
| Unknown | 26 (8.4) | 23 (7.9) | 3 (17.6) | |
Values are presented mean±SD or number (%).
EMR, endoscopic mucosal dissection; EPMR, endoscopic piecemeal mucosal resection; ESD, endoscopic submucosal dissection; CSP, cold snare polypectomy.