Nodular Fat-Sparing Hepatic Parenchyma as 11C-Choline-Avid Finding on PET/CT.

Focal nodular fat sparing of the liver may show, on PET/CT imaging, prominent tracer uptake over a background of less metabolic features of steatosis. This finding, already reported with F-18-FDG, may mimic primary or secondary neoplasms of the liver. The authors present an additional case of nodular fat-sparing hepatic parenchyma exhibiting C-11-choline avidity during PET/CT assessment for biochemical recurrence of prostate cancer.