Fig. 1From: Metastatic papillary thyroid carcinoma presenting with elevated serum levels of carbohydrate antigen 19-9 (CA19-9): a case reporta Abdominal computed tomography scan showed a 40-mm solitary tumor in segment 4 of the liver. b Fluorodeoxyglucose positron emission tomography (FDG-PET) showed FDG uptake by the liver tumorBack to article page