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An Automated Radiosynthesis of [68Ga]Ga-FAPI-46 for Routine Clinical Use
Published on: May 24, 2024
Immunoglobulin G4-Related Sclerosing Cholangitis Revealed by 68Ga-FAPI PET/MR
Chunxia Qin, Ling Yang1, Weiwei Ruan
1Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Abstract:
A 60-year-old woman with surgically confirmed immunoglobulin G4-related sclerosing cholangitis underwent 18F-FDG PET/CT due to significantly elevated serum CA-19-9 level, which revealed a hypermetabolic lesion in the residual liver. 68Ga-FAPI PET/MR was performed to further evaluate whether the FDG-avid lesion is a malignant tumor. Astonishingly, diffuse intense radioactivity was revealed throughout the liver, suggesting involvement of active immunoglobulin G4-related sclerosing cholangitis, but nonfocal elevated 68Ga-FAPI accumulation in the FDG-avid lesion indicated postoperative change. From this case, we speculated that FAPI imaging could be used for evaluation of chronic liver disease because fibroblast activation protein has a profibrogenic role in chronic liver injury.
