[Diagnostic and therapeutic possibilities in suspected Oddi's sphincter dysfunction]

Area of Science:

• Gastroenterology and Hepatology
• Diagnostic Imaging
• Surgical Endoscopy

Context:

• Sphincter of Oddi dysfunction (SOD) is a significant cause of recurrent biliary pain post-cholecystectomy.
• Accurate diagnosis is crucial for effective management and patient outcomes.
• Current diagnostic tools include endoscopic manometry and quantitative cholescintigraphy.

Purpose:

• To review the diagnostic utility of endoscopic manometry and quantitative cholescintigraphy for suspected SOD.
• To correlate clinical features with manometric findings in post-cholecystectomy patients.
• To discuss the therapeutic implications and future research directions for SOD.

Summary:

• Endoscopic manometry is the primary diagnostic method for SOD, frequently revealing elevated baseline pressure in post-cholecystectomy patients with biliary pain.
• Clinical features like biliary pain, cholestasis, bile duct dilation, and delayed ERCP contrast drainage correlate with elevated pressures, aiding patient classification.
• Isolated pancreatic SOD is noted in idiopathic pancreatitis; while pharmacological therapy lacks controlled studies, endoscopic sphincterotomy is clinically valuable. Further evaluation of less invasive methods is needed.

Impact:

• Establishes endoscopic manometry as the definitive diagnostic tool for SOD in most cases.
• Provides a framework for classifying patients based on clinical presentation and manometric findings.
• Highlights the need for further research into pharmacological and less invasive treatments for SOD.