| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Gastrointestinal Imaging |
1 From Diagnostic and Interventional Radiology, Department of Oncology, Transplants, and Advanced Technologies in Medicine, University of Pisa, Via Roma 67, I-56100 Pisa, Italy (E.N., P.G., L.B., P.V., R.L., D.C., C.B.), and 2nd Department of Radiology, Pisa University Hospital, Italy (P.B.). Received May 21, 2001; revision requested June 18; revision received October 26; accepted December 10. Address correspondence to E.N. (e-mail: neri@med.unipi.it).
PURPOSE: To evaluate computed tomographic (CT) colonography in patients with clinical suspicion of colorectal cancer and in whom colonoscopy was incomplete.
MATERIALS AND METHODS: After incomplete colonoscopy, 34 patients underwent CT colonography before and after intravenous injection of iodinated contrast agent, in supine and prone positions. Twenty patients with no evidence of colon cancer after complete colonoscopy were included as a control group. Sensitivity and specificity of CT colonography were determined for detection of cancers, polyps, and metastases to liver.
RESULTS: In 29 patients, surgery revealed 30 colorectal cancers (three synchronous cancers) and two ischemic lesions of the descending colon. Colonoscopy missed 10 colorectal cancers and three synchronous cancers; all were detected with CT colonography. Sensitivity and specificity for detection of colorectal cancer were 56% and 92%, respectively, for incomplete colonoscopy and 100% and 96%, respectively, for CT colonography (P < .01). Sensitivity and specificity of CT colonography in detection of polyps were 86% and 70%, respectively, for diameters of 5 mm or less; 100% and 80%, respectively, for 5–10-mm diameters; and 100% for diameters greater than 10 mm. Spiral CT of the liver revealed four metastases (2–5 cm); sensitivity and specificity were 100% and 43% for nonenhanced scans and 100% for contrast-enhanced scans (P < .01).
CONCLUSION: In this selected group of patients, CT colonography provided complete information to properly address surgery of colorectal cancer and treatment of liver metastases.
© RSNA, 2002
Index terms: Colon, CT, 758.12117 • Colon neoplasms, 758.32 • Colonoscopy • Computed tomography (CT), three-dimensional, 758.12117
This article has been cited by other articles:
|
|
 |
|
  C.-Y. Chen, Y.-T. Kuo, C.-H. Lee, T.-J. Hsieh, C.-M. Jan, T.-S. Jaw, W.-T. Huang, and F.-J. Yu Differentiation between Malignant and Benign Gastric Ulcers: CT Virtual Gastroscopy versus Optical Gastroendoscopy Radiology, June 1, 2009; (2009) 2522081249. [Abstract] [Full Text]
|
|
|
|
 |
|
 D. M. Hough, M. A. Kuntz, J. L. Fidler, C. D. Johnson, B. T. Petersen, J. M. Kofler, and J. G. Fletcher Detection of Occult Colonic Perforation Before CT Colonography After Incomplete Colonoscopy: Perforation Rate and Use of a Low-Dose Diagnostic Scan Before CO2 Insufflation Am. J. Roentgenol., October 1, 2008; 191(4): 1077 - 1081. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Y. Kim, S. H. Park, E. K. Choi, S. S. Lee, K. H. Lee, J. C. Kim, C. S. Yu, H. C. Kim, A. Y. Kim, and H. K. Ha Automated Carbon Dioxide Insufflation for CT Colonography: Effectiveness of Colonic Distention in Cancer Patients with Severe Luminal Narrowing Am. J. Roentgenol., March 1, 2008; 190(3): 698 - 706. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Sosna, T. Sella, O. Sy, P. T. Lavin, R. Eliahou, S. Fraifeld, and E. Libson Critical Analysis of the Performance of Double-Contrast Barium Enema for Detecting Colorectal Polyps >= 6 mm in the Era of CT Colonography Am. J. Roentgenol., February 1, 2008; 190(2): 374 - 385. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. E. Hanson, P. J. Pickhardt, D. H. Kim, and P. R. Pfau Anatomic Factors Predictive of Incomplete Colonoscopy Based on Findings at CT Colonography Am. J. Roentgenol., October 1, 2007; 189(4): 774 - 779. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. Copel, J. Sosna, J. B. Kruskal, V. Raptopoulos, R. J. Farrell, and M. M. Morrin CT Colonography in 546 Patients with Incomplete Colonoscopy Radiology, August 1, 2007; 244(2): 471 - 478. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. Mang, A. Maier, C. Plank, C. Mueller-Mang, C. Herold, and W. Schima Pitfalls in Multi-Detector Row CT Colonography: A Systematic Approach RadioGraphics, March 1, 2007; 27(2): 431 - 454. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P Veit, C Kuhle, T Beyer, H Kuehl, C U Herborn, G Borsch, H Stergar, J Barkhausen, A Bockisch, and G Antoch Whole body positron emission tomography/computed tomography (PET/CT) tumour staging with integrated PET/CT colonography: technical feasibility and first experiences in patients with colorectal cancer Gut, January 1, 2006; 55(1): 68 - 73. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Yasumoto, T. Murakami, H. Yamamoto, M. Hori, R. Iannaccone, T. Kim, H. Abe, M. Kuwabara, K. Yamasaki, N. Kikkawa, et al. Assessment of Two 3D MDCT Colonography Protocols for Observation of Colorectal Polyps Am. J. Roentgenol., January 1, 2006; 186(1): 85 - 89. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Halligan, D. G. Altman, S. A. Taylor, S. Mallett, J. J. Deeks, C. I. Bartram, and W. Atkin CT Colonography in the Detection of Colorectal Polyps and Cancer: Systematic Review, Meta-Analysis, and Proposed Minimum Data Set for Study Level Reporting Radiology, December 1, 2005; 237(3): 893 - 904. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. C. Silva, A. K. Hara, J. A. Leighton, and J. P. Heppell CT Colonography with Intravenous Contrast Material: Varied Appearances of Colorectal Carcinoma RadioGraphics, September 1, 2005; 25(5): 1321 - 1334. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. E. Zalis, M. A. Barish, J. R. Choi, A. H. Dachman, H. M. Fenlon, J. T. Ferrucci, S. N. Glick, A. Laghi, M. Macari, E. G. McFarland, et al. CT Colonography Reporting and Data System: A Consensus Proposal Radiology, July 1, 2005; 236(1): 3 - 9. [Full Text] [PDF]
|
|
|
|
|
|
A. Ozgun, E. Rollven, L. Blomqvist, S. Bremmer, R. Odh, and A. Fransson Polyp Detection with MDCT: A Phantom-Based Evaluation of the Impact of Dose and Spatial Resolution Am. J. Roentgenol., April 1, 2005; 184(4): 1181 - 1188. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Ajaj, T. C. Lauenstein, G. Pelster, G. Holtmann, S. G. Ruehm, J. F. Debatin, and S. C. Goehde MR Colonography in Patients with Incomplete Conventional Colonoscopy Radiology, February 1, 2005; 234(2): 452 - 459. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. B. Cotton, V. L. Durkalski, B. C. Pineau, Y. Y. Palesch, P. D. Mauldin, B. Hoffman, D. J. Vining, W. C. Small, J. Affronti, D. Rex, et al. Computed Tomographic Colonography (Virtual Colonoscopy): A Multicenter Comparison With Standard Colonoscopy for Detection of Colorectal Neoplasia JAMA, April 14, 2004; 291(14): 1713 - 1719. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H Herfarth and A G Schreyer The virtuosity of virtuality or how real is virtual colonography Gut, December 1, 2003; 52(12): 1662 - 1664. [Full Text] [PDF]
|
|
|
|
|
|
R. Iannaccone, A. Laghi, C. Catalano, J. A. Brink, F. Mangiapane, S. Trenna, F. Piacentini, and R. Passariello Detection of Colorectal Lesions: Lower-Dose Multi-Detector Row Helical CT Colonography Compared with Conventional Colonoscopy Radiology, December 1, 2003; 229(3): 775 - 781. [Abstract] [Full Text] [PDF]
|
|
