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Fig. 3C —42-year-old woman (patient 22 in
Table 1) who had undergone
surgical resection for colon cancer 2 years earlier. During follow-up period
after surgery, carcinoembryonic antigen levels slightly increased to 8.1
mg/dL. CT (A), PET (B), and fusion (C) images. Moderate
uptake corresponding to left paraaortic node (arrows, A and
B) is observed, suggesting lymph node metastasis; this finding was
interpreted as equivocal on CT alone and on PET alone. Metastasis was
confirmed at surgery.
