Dual-time F-18 FDG-PET/CT imaging for diagnosis of occult non-Hodgkin lymphoma in a patient with esophageal cancer.

In this case we show the significance of dual time point PET in determining the nature of an abdominal process in a 67-year-old man with a newly diagnosed adenocarcinoma of the esophagus. Whole body PET/CT detected abnormal uptake in the distal part of the esophagus. In addition, focally increased FDG uptake was detected in the right abdomen. The late PET images of the abdomen showed an increase in the SUV resulting in this lesion being evaluated as malignant. The final pathology of the abdominal mass revealed a follicular B-Cell non-Hodgkin lymphoma grade I.