Abstract: Ectopic pancreas often occurs in the digestive tract, and hepatic ectopic pancreas syndrome is very rare clinically. This article reports a case of hepatic ectopic pancreas detected by ¹⁸F-FDG PET/CT and confirmed by surgery and pathology. The imaging features were duodenal mass with abnormal uptake of ¹⁸F-FDG, which was considered to be an inflammatory lesion associated with hepatic ectopic pancreas. By analyzing this case and reviewing the relevant literature, the writer intends to deepens the understanding of the imaging features of hepatic ectopic pancreas through literature review.