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Related Experiment Videos

Carcinoma arising in choledochocele.

T Ohtsuka1, K Inoue, J Ohuchida

  • 1Dept. of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

Endoscopy
|July 27, 2001
PubMed
Summary

Choledochoceles may increase cancer risk due to pancreaticobiliary reflux. Elevated bile amylase in choledochocele patients correlated with a higher prevalence of periampullary carcinoma.

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Area of Science:

  • Gastroenterology
  • Oncology
  • Hepatobiliary Surgery

Background:

  • Choledochoceles are associated with carcinogenesis, but the link to pancreaticobiliary reflux is unclear.
  • This study investigates the role of pancreaticobiliary reflux in choledochocele-associated malignancy.

Purpose of the Study:

  • To analyze bile amylase levels in patients with choledochoceles.
  • To determine if choledochoceles predispose patients to carcinoma.

Main Methods:

  • Reviewed 2826 patients undergoing ERCP for choledochoceles or periampullary carcinoma (1995-1999).
  • Measured common duct bile amylase to assess pancreaticobiliary reflux.
  • Compared periampullary carcinoma prevalence in patients with and without choledochoceles.

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Main Results:

  • 11 patients had choledochoceles.
  • Bile amylase levels were significantly higher in choledochocele patients compared to controls.
  • Periampullary carcinoma prevalence was 27% in choledochocele patients vs. 0.9% in others (P<0.0002).

Conclusions:

  • Elevated bile amylase suggests pancreaticobiliary reflux in choledochoceles.
  • Stagnant, amylase-rich bile may promote carcinogenesis within the choledochocele epithelium.
  • Choledochoceles may predispose to carcinoma via mechanisms similar to pancreaticobiliary malunion.