TABLE 2.
Endoscopic and pathological characteristics of the colorectal LSTs.
| Characteristics | Total (n = 88) | CEMR (n = 42) | UEMR (n = 46) | p |
|---|---|---|---|---|
| Location of lesion, n (%) | ||||
| Rectum | 10 (11.4) | 2 (4.8) | 8 (17.4) | 0.093* |
| Sigmoid colon | 24 (27.3) | 12 (28.6) | 12 (26.1) | 0.794 |
| Descending colon | 9 (10.2) | 4 (9.5) | 5 (10.9) | 1* |
| Tranverse colon | 16 (18.2) | 9 (21.4) | 7 (15.2) | 0.451 |
| Ascending colon | 23 (26.1) | 13 (31.0) | 10 (21.7) | 0.362 |
| Cecum | 6 (6.8) | 2 (4.8) | 4 (8.7) | 0.678* |
| Size, median (IQR), (mm) | 20 (10–30) | 12 (10–30) | 15 (10–25) | 0.124** |
| 10–19 mm | 69 (78.4) | 35 (83.3) | 34 (73.9) | |
| 20–30 mm | 19 (21.6) | 7 (16.7) | 12 (26.1) | |
| NICE classification, n (%) | 0.429 | |||
| Type 1 | 12 (13.6) | 7 (16.7) | 5 (10.9) | |
| Type 2 | 76 (86.4) | 35 (83.3) | 41 (89.1) | |
| LST classification, n (%) | 0.431 | |||
| Granular type | 20 (22.7) | 8 (19.0) | 12 (26.1) | |
| Nongranular type | 68 (77.3) | 34 (81.0) | 34 (73.9) | |
| WHO classification, n (%) | ||||
| Nonneoplastic polyp | 4 (4.5) | 2 (4.8) | 2 (4.3) | 1* |
| Tubular adenoma | 47 (53.4) | 19 (45.2) | 28 (60.9) | 0.142 |
| Tubulovillous adenoma | 10 (11.4) | 6 (14.3) | 4 (8.7) | 0.509* |
| Serrated lesion | 27 (30.7) | 15 (35.7) | 12 (26.1) | 0.328 |
| Vienna classification, n (%) | ||||
| No dysplasia | 10 (11.4) | 4 (9.5) | 6 (13.0) | 0.742* |
| Low‐grade dysplasia | 68 (77.3) | 36 (85.7) | 32 (69.6) | 0.071 |
| High‐grade dysplasia | 10 (11.4) | 2 (4.8) | 8 (17.4) | 0.093* |
Abbreviations: CEMR, conventional endoscopic mucosal resection; UEMR, underwater endoscopic mucosal resection.
*
Fisher's exact test.
**
Mann–Whitney U test.