TABLE 1.
Clinicopathological features of patients and lesions.
| Treatment method | |||
|---|---|---|---|
| Variables |
cEMR n = 107 |
UEMR n = 96 |
p‐value |
| Age, year, mean ± SD | 57 ± 15 | 59 ± 13 | 0.5910 |
| Sex, male (%) | 65 (61) | 65 (68) | 0.3022 |
| Tumor location (%) | 0.3865 | ||
| First | 5 (5) | 2 (2) | |
| Second oral | 45 (42) | 51 (53) | |
| Second anal | 53 (50) | 40 (42) | |
| Third | 4 (4) | 3 (3) | |
| On the fold (%) | 87 (81) | 76 (79) | 0.7017 |
| Tumor size, mm, mean ± SD | 8.5 ± 3.7 | 8.1 ± 4.3 | 0.1291 |
| Macroscopic type (%) | 0.0054 | ||
| 0‐I | 12 (11) | 9 (9) | |
| 0‐IIa | 28 (26) | 48 (50) | |
| 0‐IIc | 66 (62) | 38 (40) | |
| 0‐IIa + IIc | 1 (1) | 1 (1) | |
| History of biopsy (%) | 31 (29) | 17 (18) | 0.0593 |
| Histology (%) | 0.4991 | ||
| Adenoma | 96 (90) | 84 (88) | |
| Intramucosal carcinoma | 10 (9) | 12 (13) | |
| Submucosal invasive carcinoma | 1 (1) | 0 (0) | |
Abbreviations: cEMR, conventional endoscopic mucosal resection; SD, standard deviation; UEMR, underwater endoscopic mucosal resection.