(18)F-FDG PET ((18)f-fluorodeoxyglucose positron emission tomography) is a useful but underutilized resource for identifying metastatic disease in the upper gastrointestinal tract.  While prevalent in the United States, worldwide, (18)F-FDG PET is underutilized especially in countries with a growing emergence of gastroesophageal cancers, despite evidence of clear benefit in cancer staging, and in some cases response assessment and surveillance.
(18)F-FDG PET