Current knowledge on pancreaticobiliary reflux in normal pancreaticobiliary junction

Area of Science:

• Gastroenterology
• Pathology
• Hepatobiliary Diseases

Background:

• Pancreaticobiliary reflux (PBR) involves the abnormal flow of pancreatic enzymes into the bile tract.
• This reflux is increasingly studied for its role in gallbladder diseases.
• Normal pancreaticobiliary junctions (NPBL) are a key focus in understanding PBR's implications.

Purpose of the Study:

• To review current knowledge on pancreaticobiliary reflux in normal pancreaticobiliary junctions.
• To explore the pathological implications of PBR on gallbladder diseases.
• To identify gaps in evidence and areas for future research.

Main Methods:

• Literature review of publications with varying levels of evidence.
• Analysis of studies supporting the association between PBR and biliary carcinogenesis.
• Examination of research on the prevalence of PBR in NPBL and its causes, such as sphincter of Oddi dysfunction.

Main Results:

• Numerous studies suggest a link between PBR and biliary carcinogenesis in both normal and abnormal pancreaticobiliary junctions.
• PBR is commonly observed in NPBL, with sphincter of Oddi dysfunction proposed as a primary cause.
• Despite existing research, current evidence does not fully substantiate the suggested clinical significance of PBR in NPBL.

Conclusions:

• The reflux of pancreatic enzymes into the bile tract and gallbladder remains an active area of research.
• Further high-level evidence (Type I) is required to definitively establish the pathophysiology and consequences of PBR in NPBL.
• Such evidence would significantly advance the understanding and treatment of gallbladder diseases.