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No surgical treatment was required in any case. The incidence of fish bone migration on CT after PD was about 1%. Some cases resolved spontaneously, and most of the asymptomatic cases required no intervention. For symptomatic cases, endoscopic treatment should be considered first. It is important to confirm the location of the fish bone by CT and determine whether it can be removed. The incidence of fish bone migration on CT after PD was about 1%. Some cases resolved spontaneously, and most of the asymptomatic cases required no interventio