Prognostic significance of the degree of lymphatic vessel invasion in locally advanced, surgically resectable pancreatic head cancer: A single center experience.

[ 29 ] Besides, in the Stage IIA (pT3N0) subgroup analyses using the area under the receiver operating characteristic curve, statistically significant associations could not been observed between the LVI-score and prognoses probably due to a low statistical power inherent to a small sample size, although the disease-free survival approached significance (the lower limit of 95% confidence interval was 0.46).

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