Table 2.
Colorectal polyps in the study participants
| Parameter | CEMR (n = 71) |
UEMR (n = 71) |
Total (n = 142) |
P value |
|---|---|---|---|---|
| Median Size, (IQR, mm) | 5.0 (4.0–7.0) | 6.0 (5.0–8.0) | 6.0 (4.0–7.0) | 0.061a |
| Location, n (%) | 0.612b | |||
| Ascending colon | 16 (22.5) | 13 (18.3) | 28 (20.4) | |
| Transverse colon | 17 (23.9) | 21 (29.6) | 38 (26.8) | |
| Descending colon | 5 (7.1) | 6 (8.4) | 11 (7.7) | |
| Sigmoid colon | 28 (39.4) | 22 (31.0) | 50 (35.2) | |
| Rectum | 5 (7.1) | 9 (12.7) | 14 (9.9) | |
| Morphology, n (%) | 0.339b | |||
| 0-Is | 50 (70.4) | 54 (76.1) | 104 (73.2) | |
| 0-Ip | 0 (0.0) | 1 (1.4) | 1 (0.7) | |
| 0-IIa | 21 (29.6) | 16 (22.5) | 37 (26.1) | |
| Neoplastic polyps, n (%) | 0.618b | |||
| Tubular | 47 (66.2) | 48 (67.6) | 95 (66.9) | |
| Tubulovillous or villous | 0 (0.0) | 2 (2.8) | 2 (1.4) | |
| SSA | 1 (1.4) | 1 (1.4) | 2 (1.4) | |
| Other polyps, n (%) | ||||
| Hyperplastic polyps | 13 (18.3) | 9 (12.7) | 22 (15.5) | |
| Inflammatory polyps | 10 (14.1) | 11 (15.5) | 21 (14.8) |
CEMR conventional endoscopic mucosal resection, UEMR underwater endoscopic mucosal resection, SSA sessile serrated adenoma
a Wilcoxon rank-sum test. b Chi-square test