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FIGURE 3. PET/CT scan of patient with pulmonary metastases of rectal cancer. Top row shows images evaluated as part of this study. At this time, CT scan demonstrated 5 small pulmonary nodules in both lungs, which were considered as suspicious for metastatic disease. CT images of 2 representative nodules are shown on left image (long arrows). All nodules were not visible in corresponding PET images. A follow-up study performed 3 mo later showed marked increase in size of nodules (long arrows) as well as a new nodule (short arrow) and confirmed presence of metastatic disease.
