A 45-year-old woman comes to her physician complaining of a 2-month history of recurrent, severe abdominal pain that occurs mainly after eating large, fatty meals. However, she is well-nourished and an aspirate of her duodenal contents shows normal micellar concentrations of bile acids. A diagnostic procedure reveals a biliary obstruction; where is the gallstone most likely to be lodged?
A. right hepatic duct
B. cystic duct
C. common hepatic duct
D. common bile duct
E. sphincter of Oddi
ANS: A
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