Why the study?
Primary angiosarcoma of the kidney is a rare aggressive malignancy.
FDG PET/CT can detect primary renal angiosarcoma and some metastases, but may miss hepatic metastases compared to MRI due to low FDG avidity.
FDG PET/CT may miss hepatic metastases in renal angiosarcoma due to low avidity; leaves open optimal multimodality staging for this rare tumor.
Primary angiosarcoma of the kidney is a rare aggressive malignancy. We describe MRI and FDG PET/CT findings in a case of primary renal angiosarcoma with hepatic, pulmonary, and bony metastases. The large primary tumor showed extensive necrosis and increased FDG uptake in the nonnecrotic components. Multiple metastatic lesions in the liver, lung, and bones were detected by FDG PET/CT. Most of the hepatic metastases seen on MRI were missed on FDG PET/CT due to low FDG avidity.
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Yang et al. (2023) studied this question.
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