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A case of a mucin-producing bile duct tumor diagnosed over the course of 6 years

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Abstract

We report a case of a mucin-producing intraductal papillary neoplasm of the intrahepatic bile duct (M-IPNB) diagnosed over a period of 6 years. A 64-year-old man underwent follow-up evaluations for an abdominal aortic aneurysm at our hospital. In 2009, a computed tomography (CT) scan revealed a simple hepatic cyst in segment 3 of the liver. Annual CT scans initially showed almost no change in the size or shape of the cyst. The cystic lesion, which measured 5 cm in 2014, had increased to 11 cm by 2015, and a solid component was detected within the cyst. A biliary cystic tumor was suspected and we performed a left lateral hepatectomy. Pathological examination showed that the papillary lesion in the cyst included adenocarcinoma and adenoma components. We diagnosed M-IPNB in 2015. Identification of the solid component of the cyst, as well as an increase in cyst diameter in the image analyses, was critical for diagnosis of M-IPNB.

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Authors and Affiliations

  1. M-IPNB, Department of Surgery, Kouseiren Takaoka Hospital, 5-10, Eirakumachi, Takaoka, Toyama, 933-8555, Japan

    Sho Yamada, Yosuke Kato, Masahiro Hada, Masanori Kotake, Kaeko Oyama & Takuo Hara

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  1. Sho Yamada
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  2. Yosuke Kato
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  3. Masahiro Hada
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  4. Masanori Kotake
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  5. Kaeko Oyama
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  6. Takuo Hara
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Correspondence to Sho Yamada.

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The authors have no conflict of interest to declare.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008(5)

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Informed consent was obtained from all patients for being included in the study.

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Yamada, S., Kato, Y., Hada, M. et al. A case of a mucin-producing bile duct tumor diagnosed over the course of 6 years. Clin J Gastroenterol 10, 530–534 (2017). https://doi.org/10.1007/s12328-017-0775-7

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  • DOI: https://doi.org/10.1007/s12328-017-0775-7

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