Prominent 68 Ga-FAPI Uptake in Renal Parenchyma Caused by Immunoglobulin G4-Related Nephropathy.

Zhang, Hongzhe; Pan, Qingqing; Luo, Yaping · Clin Nucl Med · 2023

case_report · Level V

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Abstract

A 57-year-old man presented with a dry cough and renal insufficiency. Serum immunoglobulin G4 (IgG4) level was markedly elevated, and IgG4-related disease was clinically considered. 18 F-FDG PET/CT revealed mild uptake in salivary glands and also moderately increased activity in renal parenchyma and prostate. 68 Ga-FAPI PET/CT detected prominent and evenly distributed 68 Ga-FAPI uptake in the kidney, and the pancreas, salivary gland, and prostate also showed intense activity, consistent with IgG4-related disease involving the kidney, pancreas, salivary gland, and prostate.

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