LAUSR

ABSTRACT Renal cell carcinoma (RCC) with isolated humeral metastasis as the initial presentation is rare. We reported FDG PET/CT findings of isolated humeral metastasis from RCC in a 63-year-old man with right upper arm pain as the initial presentation. The bone scanning in an outside hospital showed that the focus with increased uptake of the right humerus was possibly malignant. FDG PET/CT showed that the right humeral mass had intense activity, and there was an additional FDG lesion in the lower pole of the right kidney. The mass of the right humerus was later confirmed as humeral metastasis from RCC by pathological examination.