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[Occult pancreatobiliary reflux and gallbladder carcinoma]
Jin Kan Sai1, Masafumi Suyama, Yoshihiro Kubokawa
1Department of Gastroenterology, Juntendo University.
Summary
Secretin injection MRCP identified a subgroup with elevated biliary amylase, suggesting pancreatobiliary reflux in normal pancreaticobiliary junctions. This reflux may be linked to gallbladder cancer.
Area of Science:
- Gastroenterology
- Diagnostic Imaging
- Oncology
Context:
- Gallbladder wall thickening is a common finding on imaging.
- Normal pancreaticobiliary junction anatomy is presumed.
- Secretin injection magnetic resonance cholangiopancreatography (SI-MRCP) is a specialized imaging technique.
Purpose:
- To investigate the presence and significance of pancreatobiliary reflux in patients with normal pancreaticobiliary junctions and gallbladder wall thickening.
- To evaluate the association between pancreatobiliary reflux and gallbladder carcinoma.
- To assess the utility of SI-MRCP in identifying individuals at risk.
Summary:
- 108 patients with normal pancreaticobiliary junctions and gallbladder wall thickening underwent SI-MRCP.
- Patients were categorized into intensified (n=19) or non-intensified (n=89) groups based on biliary system diameter changes post-secretin.
- The intensified group showed significantly higher biliary amylase levels (41674 IU/L vs. 210 IU/L).
- Four patients in the intensified group had gallbladder carcinoma with markedly elevated biliary amylase (90783 IU/L).
Impact:
- Pancreatobiliary reflux can occur in individuals with normal pancreaticobiliary junctions.
- This reflux may be a risk factor for gallbladder carcinoma.
- SI-MRCP is a valuable tool for identifying individuals with pancreatobiliary reflux and potential gallbladder cancer risk.