Abstract
An 82-year-old woman who had been suffering from repeated obstructive jaundice for 7 years was referred to our hospital. Although endoscopic aspiration of the mucin in the common bile duct had been temporally effective, origin of the mucin production had not been detectable. The patient thus had been forced to be on long-term follow-up without curative resection. Endoscopic retrograde cholangioscopy on admission revealed massive mucin in the common bile duct. In addition, an anomalous bile duct located proximal to the gallbladder was identified. Since the lumen of the anomalous duct was irregular and the rest of biliary tree was completely free of suspicious lesions, the anomalous duct was judged to be the primary site. Surgical resection of the segment 4 and 5 of the liver combined with the extrahepatic biliary tract was performed. Pathological diagnosis was compatible to intraductal papillary neoplasm with high-grade intraepithelial dysplasia of the anomalous bile duct. The patient has been free from the disease for 6.5 years after resection. This is the first case of intraductal papillary neoplasm derived from an anomalous bile duct, which was resected after long-term conservative treatment. The present case suggested the slow growing character of natural history of the neoplasm.
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Abbreviations
- IPNB:
-
Intraductal papillary neoplasm of the biliary duct
- WHO:
-
World Health Organization
- IPMN-P:
-
Intraductal papillary neoplasm of the pancreas
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Acknowledgements
The authors thank Rumi Hino, Tetsuo Ushiku, and Masashi Fukayama at Department of Pathology, Graduate School of Medicine, The University of Tokyo, for their kind advice for histological diagnosis of the present case.
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Maki, H., Aoki, T., Ishizawa, T. et al. Intraductal papillary neoplasm originating from an anomalous bile duct. Clin J Gastroenterol 10, 174–178 (2017). https://doi.org/10.1007/s12328-017-0721-8
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DOI: https://doi.org/10.1007/s12328-017-0721-8