Pancreas
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Although a positive resection margin has been reported to be a strong prognostic factor after resection for pancreatic cancer, several studies indicated that resection status did not independently affect survival. The aim of this study was to examine the influence of resection margin status on survival after extended radical resection for pancreatic head cancer. ⋯ R2 resection was an independent predictor of poor prognosis after pancreatoduodenectomy/pylorus-preserving pancreatoduodenectomy, whereas R1 resection did not independently affect the survival.