Recurrent Migration of Fish Bone Foreign Bodies into the Intrahepatic Bile Duct After Pancreaticoduodenectomy…

Abstract

Fish bone migration into the bile duct after pancreaticoduodenectomy (PD) is rare, and the mechanism of recurrent migration is unclear. We report a case in which multiple fish bones were repeatedly identified and removed from the intrahepatic bile duct during four endoscopic retrograde cholangiopancreatography procedures over more than six years after PD. The foreign bodies were definitively identified as fish bones using a component analysis and DNA metabarcoding. These findings suggest that recurrent migration may occur even in the absence of apparent anatomical abnormalities and it may be associated with postoperative intestinal dysmotility and altered intraluminal flow dynamics.

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BibTeX

@article{nakai2026recurrent,
  title = {{Recurrent Migration of Fish Bone Foreign Bodies into the Intrahepatic Bile Duct After Pancreaticoduodenectomy Identified by DNA Metabarcoding: A Case Report with Pathophysiological Considerations}},
  author = {Yoshitaka Nakai and Osamu Araki and Takeharu Nakamura and Mimori Seki and Yasuyuki Tanaka and Atsuyuki Ikeda and Shigehiko Fujii},
  journal = {Internal Medicine},
  year = {2026},
  month = aug,
  doi = {10.2169/internalmedicine.7543-26},
  url = {https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7543-26/_article},
  note = {CC BY-NC-ND},
}

RIS

TY  - JOUR
TI  - Recurrent Migration of Fish Bone Foreign Bodies into the Intrahepatic Bile Duct After Pancreaticoduodenectomy Identified by DNA Metabarcoding: A Case Report with Pathophysiological Considerations
AU  - Yoshitaka Nakai
AU  - Osamu Araki
AU  - Takeharu Nakamura
AU  - Mimori Seki
AU  - Yasuyuki Tanaka
AU  - Atsuyuki Ikeda
AU  - Shigehiko Fujii
PY  - 2026
DA  - 2026/08/08
JO  - Internal Medicine
DO  - 10.2169/internalmedicine.7543-26
UR  - https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7543-26/_article
AB  - Fish bone migration into the bile duct after pancreaticoduodenectomy (PD) is rare, and the mechanism of recurrent migration is unclear. We report a case in which multiple fish bones were repeatedly identified and removed from the intrahepatic bile duct during four endoscopic retrograde cholangiopancreatography procedures over more than six years after PD. The foreign bodies were definitively identified as fish bones using a component analysis and DNA metabarcoding. These findings suggest that recurrent migration may occur even in the absence of apparent anatomical abnormalities and it may be associated with postoperative intestinal dysmotility and altered intraluminal flow dynamics.
SN  - 1349-7235
SN  - 0918-2918
ER  -

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