Figure 2.

A 54-year-old female patient previously submitted for surgical treatment for primary colon cancer and with a known, single liver metastasis. This patient underwent contrast-enhanced PET/CT for the exclusion of other metastatic lesions, as she was a candidate for surgical resection of the hepatic localization. (a) Axial, contrast-enhanced, full-dose CT shows a suspicious 8-mm solid lesion close to the small bowel. (b) The lesion is highly FDG-avid on contrast-enhanced PET/CT. However, the pathologic nature of this finding is clearly evident only on contrast-enhanced CT, whereas using standard CT, it could have been deemed as unspecific bowel FDG-activity. This patient thus avoided inappropriate surgical treatment and was referred for chemotherapy. PET, positron emission tomography; CT, computed tomography; FDG, [¹⁸ F] fluorodeoxyglucose.