Factors | RT group (n = 13) | Non-RT group (n = 14) | p-value | |
---|---|---|---|---|
Age, yr. (mean ± SD) | 66 ± 5 | 68 ± 7.4 | 0.31 | |
Gender | Male | 10 | 12 | 0.65 |
Female | 3 | 2 | ||
Number of primary tumors | Single | 12 | 10 | 0.36 |
Multiple | 1 | 4 | ||
Location of tumor | Ut | 3 | 2 | 0.59 |
Mt | 8 | 11 | ||
Lt | 2 | 1 | ||
Invasion depth | pT1a-MM | 6 | 10 | 0.25 |
pT1b-SM1 | 7 | 4 | ||
Circumferential extent of ESD | < 3/4 | 7 | 10 | 0.44 |
≥3/4 | 6 | 4 | ||
Longitudinal diameter of ESD (mm; mean ± SD) | 43 ± 17 | 42 ± 21 | 0.88 | |
Positive resection margin | 1 | 0 | 1.00 | |
Positive lymphatic invasion | 1 | 0 | 0.48 | |
Positive vascular invasion | 0 | 0 | 1.00 | |
Additional chemotherapy | (+) | 4 | 4 | 1.00 |
(−) | 9 | 10 |