PET/CT appearance of appendiceal adenocarcinoma.

Appendiceal cancer is rare and is associated with a poor prognosis because it is usually found at an advanced stage. We report the case of a 58-year-old man with appendiceal adenocarcinoma, who complained of right lower abdominal malaise for a couple of months. The tumor was detected early on contrast-enhanced computed tomography and F-18 FDG PET/CT. It appeared as an obvious enhancement and intense abnormal tracer uptake focus in front of the right psoas major, which was easily misinterpreted as an enlarged lymph node.