FDG Hepatic Superscan Due to Metastatic Infiltration of Prostate Cancer.

A 69-year-old man with prostate cancer presented to the hospital with 2 weeks' history of fever, abdominal distension, and fatigue. Laboratory findings showed signs of acute liver failure, and marked elevation of lactate dehydrogenase and tumor marker levels. Abdominal CT showed hepatomegaly with multiple hypodense lesions in both lobes, suggesting metastases. FDG PET/CT scan shows hypermetabolism unusually in the liver with significantly suppressed heart and brain activity, reminiscent of an FDG hepatic superscan. The hypermetabolic lesions confirmed with Tru-Cut needle biopsy of the liver as metastasis of prostate cancer.