Table 4.
The comparisons of clinicopathological characteristics between ER + SR and ER-alone treatments in extremely low-risk group with VM(−), LVI(−), and PD(−)
| ER + SR | ER-alone |
p_value (χ2 test) |
||
|---|---|---|---|---|
| (n = 21) | (n = 63) | |||
| Age | ||||
| Median [IQR] | 60.00 [55.00, 65.00] | 63.00 [57.50, 67.00] | 0.382# | |
| Sex | ||||
| Female | 4 (19.0%) | 15 (23.8%) | 0.770^ | |
| Male | 17 (81.0%) | 48 (76.2%) | ||
| SMI ≥ 200 μm | ||||
| Negative | 5 (23.8%) | 14 (22.2%) | 1.000 | |
| Positive | 16 (76.2%) | 49 (77.8%) | ||
| Location | ||||
| Upper | 6 (28.6%) | 10 (15.9%) | 0.437 | |
| Middle | 7 (33.3%) | 24 (38.1%) | ||
| Lower | 8 (38.1%) | 29 (46.0%) | ||
| Concurrent LNM | ||||
| Negative | 21 (100%) | NA | NA | |
| Positive | 0 (0%) | NA | ||
| Post-resection LNM | ||||
| Negative | 21 (100.0%) | 61 (96.8%) | 1.000^ | |
| Positive | 0 (0.0%) | 2 (3.2%) | ||
| Overall LNM | ||||
| Negative | 21 (100.0%) | 61 (96.8%) | 1.000^ | |
| Positive | 0 (0.0%) | 2 (3.2%) | ||
| Post-resection DOM | ||||
| Negative | 20 (95.2%) | 61 (96.8%) | 1.000^ | |
| Positive | 1 (4.8%) | 2 (3.2%) | ||
IQR interquartile range; PD poor differentiation; LVI lymphovascular invasion; VM vertical margin; SMI Submucosal invasion; LNM lymph node metastasis; DOM distant organ metastasis; NA not available
#Mann–Whitney test
^Fisher’s exact test