Colonography by CT, MRI and PET/CT combined with conventional colonoscopy in colorectal cancer screening and staging

Figure 2 A 63-year-old man was detected multi metastases in whole body PET/CT scan with unknown original tumor (black arrows, A). CC showed a polyp at the sigmoid colon (white arrows, panel B). CT detected bone destruction at the right ilium (black arrow, C) and a polyp at the sigmoid colon (white arrow, C). PET/CTC localizes the high metabolism bone destruction lesions (black arrows, D) and high metabolism polyps at sigmoid colon (white arrow, D). Histopathology follow by CC revealed a inflame polyp. The case illustrated the potential value of PET/CTC in screening colorectal polyps.