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. 2022 Aug 25;37(2):871–880. doi: 10.1007/s00464-022-09459-5

Table 2.

The comparisons of clinicopathological characteristics between ER + SR and ER-alone treatments in high-risk group with LVI(+) and/or VM(+)

ER + SR ER-alone p value
(χ2 test)
(n = 19) (n = 18)
Age
Median [IQR] 62.00 [55.00, 63.50] 61.00 [54.00, 69.75] 0.522#
Sex
Female 1 (5.3%) 2 (11.1%) 0.604^
Male 18 (94.7%) 16 (88.9%)
SMI ≥ 200 μm
Negative 0 (0.0%) 4 (22.2%) 0.046^
Positive 19 (100.0%) 14 (77.8%)
VM
Negative 9 (47.4%) 15 (83.3%) 0.038^
Positive 10 (52.6%) 3 (16.7%)
LVI
Negative 6 (31.6%) 2 (11.1%) 0.232^
Positive 13 (68.4%) 16 (88.9%)
PD
Negative 9 (47.4%) 9 (50.0%) 1.000
Positive 10 (52.6%) 9 (50.0%)
Location
Upper 1 (5.3%) 2 (11.1%) 0.048
Middle 1 (5.3%) 6 (33.3%)
Lower 17 (89.5%) 10 (55.6%)
Concurrent LNM
Negative 9 (47.4%) NA NA
Positive 10 (52.6%) NA
Post-resection LNM
Negative 17 (94.4%) 16 (88.9%) 1.000^
Positive 1 (5.6%)a 2 (11.1%)
Overall LNM
Negative 9 (47.4%) 16 (88.9%) 0.013^
Positive 10 (52.6%) 2 (11.1%)
Post-resection DOM
Negative 16 (88.9%) 17 (94.4%) 1.000^
Positive 2 (11.1%) 1 (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