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Background Intraductal papillary neoplasm of the bile duct (IPNB) is a bile duct neoplasm characterized as a precursor lesion of cholangiocarcinoma. An invasive component is present in approximately 40 to 80% of reported cases and lymph node metastasis is sometimes detected. We experienced a rare case of IPNB with invasive adenocarcinoma and lymph node metastasis that developed 38 years after choledochoduodenostomy...
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