Hepatic Inflammatory Pseudotumor on 18F-FDG and 18F-FAP-42 PET/CT

Hepatic inflammatory pseudotumor is a rare benign disease. We describe the 18 F-FDG and 18 F-FAPI-42 PET/CT findings of hepatic inflammatory pseudotumor in a 57-year-old man. Compared with 18 F-FDG, 18 F-FAPI-42 PET/CT identified more lesions and showed more intense uptake within the lesions. This case illustrates that hepatic inflammatory pseudotumor should be contemplated in the differential diagnosis of liver lesions with increased 18 F-FDG and 18 F-FAPI-42 uptake. 18 F-FAPI-42 PET/CT might be used as a helpful tool for evaluating hepatic inflammatory pseudotumor.