Task: Answer Verification
Input (English): Question: Do bile duct crystals contribute to sphincter of Oddi dysfunction?
Answer: Bile duct crystals occur infrequently in patients with symptoms after cholecystectomy and are found in patients with normal and abnormal biliary sphincter manometry. This study suggests that the presence of bile duct crystals, or microlithiasis, does not play a role in sphincter of Oddi dysfunction.
Output (English): no