2018 Volume 60 Issue 7 Pages 1338-1343
A 73-year-old woman presented to the emergency room of our hospital complaining of right upper quadrant abdominal pain as well as back pain. Computed tomography revealed linear calcification in the common bile duct (CBD) and she was admitted to our hospital for further examination. Endoscopic sphincterotomy (EST) was conducted with the suspected diagnosis of choledocolithiasis, and led to the successful removal of two needle-shaped objects from the CBD. Component analysis revealed that the removed objects mainly consisted of calcium phosphate. In addition, pathologic assessment of the specimens showed a bone-like structure, leading to the final diagnosis of choledocolithiasis caused by fish bones that served as cores around which gallstones developed. Interestingly, our case has no history of having received treatment on the major duodenal papilla.
