These CEA-Scan images are of a 66-year-old male with a history of right sided colon cancer. He has had no signs or symptoms of recurrence for over 2 years but now presents with a rising blood CEA. SPECT images with CEA-Scan at 3 hours post injection revealed uptake along the right iliac crest (image block 1), which was also present in the 24 hour images (not shown). In order to determine if the suspicious pelvic uptake is in the soft tissues adjacent to the ileum or in bone, a radionuclide bone scan was performed 6 days later. The SPECT bone scan showed intense accumulation of the radiopharmaceutical in the right iliac wing (image block 2) correlating the findings on the CEA-Scan. This suspected abnormality had not been detected with other anatomical imaging studies.

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