Clinical value of 18F-FDG PET/CT in assessing suspicious relapse after rectal cancer resection

Figure 1 Perirectal recurrence. Endoscopic examination, transverse images and PET/CT images obtained 25 mo after surgery in a 39-year-old man. A: Colonoscopy at the level of tumor resection showed no evidence of recurrence; B: CT demonstrated perirectal soft tissue that might represent a local recurrent tumor or postoperative scar tissue (arrows); C, D: PET/CT revealed a perirectal lesion with high FDG uptake (arrows); E: Local recurrence was confirmed by PET/CT guided tissue core biopsy (arrow); F: Whole body PET/CT confirmed local recurrent tumor (arrow) and no distant metastasis.