Figure 3
18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) images obtained 34 months after primary surgery. (A) Axial and (B) coronal PET/CT images show three areas (1 to 3) of increased 18F-FDG uptake adjacent to the rectum. Maximum standardized uptake values (SUVmax) at 60 and 120 min were (1A) 3.5 and 4.5, (2A) 9.4 and 13.7, and (3A) 6.4 and 7.6, respectively. (C) Axial contrast-enhanced CT scans were performed 2 weeks earlier, the results of which were equivocal for one mesorectal (1C) and one pararectal (3C) lymph node. BL, bladder.