Use of computed tomography in the management of colorectal cancer

Figure 1 73-year-old female. Faecal occult blood positive. Sigmoidoscopy was normal. A: Source axial computed tomography (CT) image from CT colonography study in the prone position demonstrates focal thickening (arrow) along a haustral fold in the proximal colon. Note the presence of contrast tagged faecal material coating the lesion; B: 3D reconstructed image of the same lesion showing a polypoid mass (arrow) arising from the haustral fold. Biopsy was positive for adenocarcinoma and the patient underwent curative right hemicolectomy.