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British Journal of Radiology (2006) 79, 208-214
© 2006 British Institute of Radiology
doi: 10.1259/bjr/99126323
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Comparison of Radiologists' confidence in excluding significant colorectal neoplasia with multidetector-row CT colonography compared with double contrast barium enema

S A Taylor, MD, MRCP, FRCR S Halligan, MD, MRCP, FRCR A Slater, MRCP, FRCR D Burling, MRCP, FRCR M Marshall, MRCP, FRCR and C I Bartram, FRCP, FRCS, FRCR

Department of Intestinal Imaging, St Mark's and Northwick Park Hospitals, Harrow, London HA1 3UJ, UK


Figure 1
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  		Figure 1. Spot view from a double contrast barium enema demonstrates a large filling defect(arrows) classified as a polyp by the reader. Subsequent histology confirmed invasive carcinoma.

 

Figure 2
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  		Figure 2. Presumed CT colonographic false positive.(a) Axial view and (b) CT colonographic endoluminal view demonstrates a 6 mm filling defect (arrows) reported as a polyp but not found on subsequent colonoscopy.

 

Figure 3
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  		Figure 3. Transverse colonic Crohn's stricture. (a) Double contrast barium enema demonstrated the stricture (arrows) correctly classified as benign by the reader. (b) Axial CT colonographic image shows the short thick walled stricture (arrows) reported as a possible cancer by the reader.

 




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