Primary Renal Neuroendocrine Tumor Demonstrated on 68 Ga-FAPI-04 PET/CT and 18 F-FDG PET/CT.

Xiao, Liu; Li, Li; Zhou, Yan; Pan, Shulei; Zhang, Wenjie · Clin Nucl Med · 2026

case_report · Level V

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Abstract

Primary renal neuroendocrine tumors are very rare. Herein, we report a case of imaging findings of a renal neuroendocrine tumor in a 36-year-old man. On 68 Ga-FAPI-04 PET/CT and 18 F-FDG PET/CT, it presented as a renal soft tissue mass with intense FAPI uptake (SUV max : 20.8) but lower FDG uptake (SUV max : 9.3). Postsurgical pathology supported a diagnosis of well-differentiated renal neuroendocrine tumor (G2).

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