Figure 1.

Colorectal cancer: (a and b) Axial contrast-enhanced computed tomography images in a 60-year-old male patient with colorectal cancer presenting with weight loss and chronic abdominal pain demonstrate marked distension of transverse colon and splenic flexure (long arrow in a) with associated short segment mural thickening of proximal descending colon with abrupt transition (short arrow) to a normal appearing descending colon (long arrow in b). The large bowel dilatation and abrupt transition are better depicted on the coronal image (c).