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

Figure 3 A 56-year-old women complained about blood stool for about 1 year. CC showed one stenotic tumoral site in the rectum (white arrows, A). Sagittal MRC showed thickened rectum with suspected infiltration of the surrounding tissue (white arrows, B). Axial PET/CTC showed a high metabolism metastasis lymphoid node (white arrow, C). Axial PET/CTC revealed tumor sites with elevated glucose metabolism and clear circumscription (two white arrows, D). PET/CT also indicated no tumorous infiltration of the adjacent tissue and no distant metastases. This was later verified by histopathology. The case illustrated the value of VC in CRC TNM staging.