Diagnostic value of FDG-PET/CT in the detection of synchronous cancers

Synchronous cancer refers to a new primary cancer in a person with a history of malignant disease. It may be easily missed in early stages of its development. Besides its high sensitivity in the diagnosis of malignant disease, FDG-PET/ CT has a technical advantage due to routinely performed whole-body scanning procedures in the detection of synchronous cancers. In this case report, we discussed two cases in which synchronous cancer was incidentally detected by FDG-PET/CT whole body examination.