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Nuclear Imaging in Renal Cell Carcinoma: Current Evidence and Clinical Applications
Abdullah Al-Khanaty1,2, Shane Qin2, Carlos Delgado1
1Division of Cancer Surgery, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne 3000, Australia.
Cancers
|January 28, 2026
Summary
Nuclear imaging techniques like PET and SPECT offer complementary biological insights for renal cell carcinoma (RCC) beyond standard imaging. While not for routine use, selected radiotracers can improve RCC characterization and treatment planning.
Area of Science:
- Nuclear medicine
- Oncology
- Radiochemistry
Background:
- Conventional imaging (CT, MRI) is standard for renal cell carcinoma (RCC).
- Nuclear imaging (PET, SPECT) offers biological characterization (metabolism, angiogenesis, hypoxia, microenvironment).
- Evidence suggests nuclear imaging provides incremental value in specific RCC scenarios.
Purpose of the Study:
- To review the role of PET and SPECT radiotracers in localized and metastatic RCC.
- To evaluate the diagnostic performance and clinical utility of various nuclear imaging techniques in RCC.
- To assess the potential of nuclear imaging for tumor characterization, prognostication, and personalized treatment.
Main Methods:
- Narrative literature review of studies on PET and SPECT radiotracers in RCC.
- Databases searched: PubMed, Embase, Web of Science.
- Priority given to meta-analyses, prospective trials, and studies with histopathological correlation.
Main Results:
- FDG PET/CT has limited sensitivity for primary RCC but is effective for metastatic/recurrent disease (85-90% sensitivity/specificity).
- [99mTc]sestamibi SPECT/CT differentiates oncocytoma from RCC (85-90% sensitivity/specificity).
- PSMA PET/CT and CAIX-targeted PET/CT show high detection rates (85-90%) in clear-cell RCC, especially metastatic disease, influencing management.
- FAPI PET/CT shows promise but requires further investigation due to preliminary data and non-specific uptake.
Conclusions:
- Radiotracer imaging offers complementary, biology-driven insights in RCC, extending beyond anatomical assessment.
- Most nuclear imaging modalities are adjunctive or investigational, not for routine use.
- Selective application can enhance RCC tumor characterization, prognostication, and personalized treatment planning.
Keywords:
PET/CTPSMA-targeted imaging[18F]FDGcarbonic anhydrase IXclear-cell renal cell carcinomafibroblast activation protein inhibitornuclear imagingrenal cell carcinomaMore Related Videos
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