Widespread metastases in small cell carcinoma of the prostate on FDG PET/CT.

A 72-year-old man recently diagnosed with a small cell carcinoma of the prostate was referred for staging of the primary malignancy. F-18-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography and computed tomography (PET/CT) revealed extensive hypermetabolic metastatic involvement of the liver, multiple small metastatic nodules in the lungs, and a solitary bone metastasis to the left scapula, in addition to increased FDG uptake in the enlarged prostate. Serum prostate-specific antigen level was within normal limits. Although FDG PET is not a helpful imaging method for evaluating prostatic adenocarcinoma, it may be useful in staging of small cell carcinoma of the prostate.