Abstract

The diagnostic performance of ¹⁸F-fluorodeoxyglucose (¹⁸F-FDG) positron emission tomography/computed tomography (PET/CT) for primary kidney tumors is limited. Nevertheless, ¹⁸F-FDG PET/CT is valuable for staging renal cell carcinoma (RCC) when suspected metastases coexist, as one-third of patients with RCC have distant metastases upon diagnosis. Herein, we present a 53-year-old male patient with extensive ¹⁸F-FDG-avid metastatic lesions and an ¹⁸F-FDG-avid renal mass, which later revealed RCC.