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Adjuvant gemcitabine plus S-1 chemotherapy may be one of several factors contributing to improved outcomes after aggressive surgical resection of advanced biliary carcinoma in recent years.

Postoperative CA19-9 level is a better prognostic factor than preoperative CA19-9 level, and curative surgery for resectable pancreatic cancer should be tried regardless of the preoperative CA19-9 level.

PBD had a notable influence on bile microbial contamination, including a higher rate of antibiotic resistance. Therefore, specific antibiotic prophylaxis based on bile culture is required for preventing infectious complications in pancreatoduodenectomy patients who undergo PBD.

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