Table 1.
The clinicopathological characteristics of pT1b ESCC between ER + SR and ER-alone groups
| ER + SR | ER-alone |
p value (χ2 test) |
||
|---|---|---|---|---|
| (n = 42) | (n = 124) | |||
| Age | ||||
| Median [IQR] | 60.5 [55.00, 64.00] | 62 [57.00, 67.00] | 0.101# | |
| Sex | ||||
| Female | 5 (11.9%) | 31 (25.0%) | 0.118 | |
| Male | 37 (88.1%) | 93 (75.0%) | ||
| SMI ≥ 200 μm | ||||
| Negative | 5 (11.9%) | 33 (26.6%) | 0.080 | |
| Positive | 37 (88.1%) | 91 (73.4%) | ||
| VM | ||||
| Negative | 32 (76.2%) | 121 (97.6%) | < 0.001^ | |
| Positive | 10 (23.8%) | 3 (2.4%) | ||
| LVI | ||||
| Negative | 29 (69.0%) | 108 (87.1%) | 0.015 | |
| Positive | 13 (31.0%) | 16 (12.9%) | ||
| PD | ||||
| Negative | 30 (71.4%) | 72 (58.1%) | 0.176 | |
| Positive | 12 (28.6%) | 52 (41.9%) | ||
| Location | ||||
| Upper | 7 (16.7%) | 17 (13.7%) | 0.319 | |
| Middle | 9 (21.4%) | 42 (33.9%) | ||
| Lower | 26 (61.9%) | 65 (52.4%) | ||
| Concurrent LNM | ||||
| Negative | 32 (76.2%) | NA | NA | |
| Positive | 10 (23.8%) | NA | ||
| Post-resection LNM | ||||
| Negative | 40 (97.6%) | 119 (96.0%) | 1.000^ | |
| Positive | 1 (2.4%)a | 5 (4.0%) | ||
| Overall LNM | ||||
| Negative | 32 (76.2%) | 119 (96.0%) | < 0.001 | |
| Positive | 10 (23.8%) | 5 (4.0%) | ||
| Post-resection DOM | ||||
| Negative | 36 (87.8%) | 117 (94.4%) | 0.292 | |
| Positive | 5 (12.2%) | 7 (5.6%) | ||
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
aOne case with ER + SR treatment revealed both concurrent and post-resection LNM