Early experiences with computed axial tomography colonography



      Computed axial tomography (CT) colonography is the latest radiologic technique to be used to image the large bowel. We studied its role as a diagnostic tool in colorectal practice.


      One hundred and three patients suspected of having colorectal pathology underwent CT colonography.


      CT colonography suggested a diagnosis of colonic carcinoma in 18 patients, and 17 of these underwent surgery. A colorectal neoplasm was not found in only 1 patient who had extrinsic colonic compression by an ovarian cyst. Twenty-one patients had suspected colonic polyps on scanning. Subsequent endoscopy in 19 of these patients confirmed the presence of polyps in only 10. CT colonography also revealed valuable extracolonic pathology: 8 occult noncolonic neoplasms and 163 other incidental findings.


      CT colonography has good patient compliance and is a useful diagnostic modality in detecting colorectal neoplasms. Its main advantage over other such investigative tools is its ability to detect extracolonic pathology.


      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'


      Subscribe to The American Journal of Surgery
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect


        • Levine M.S
        • Rubesin S.E
        • Laufer I
        • et al.
        Diagnosis of colorectal neoplasms at double-contrast barium enema examination.
        Radiology. 2000; 216: 11-18
        • Winawer S.J
        • Stewart E.T
        • Zauber A.G
        • et al.
        Comparison of colonoscopy and double-contrast barium enema for surveillance after polypectomy.
        N Engl J Med. 2000; 342: 1766-1772
        • Cass O.W
        • Freeman M.L
        • Peine C.J
        • et al.
        Objective evaluation of endoscopy skills during training.
        Ann Intern Med. 1993; 118: 40-44
        • Tran D.Q
        • Rosen L
        • Kim R
        • et al.
        Actual colonoscopy.
        Am Surg. 2001; 67: 845-847
        • Johnson C.D
        • Dachman A.H
        CT colonography.
        Radiology. 2000; 216: 331-341
        • Fenlon H.M
        • McAneny D.B
        • Nunes D.P
        • et al.
        Occlusive colon carcinoma.
        Radiology. 1999; 210: 423-428
        • Morrin M.M
        • Farrell R.J
        • Raptopoulos V
        • et al.
        Role of virtual computed tomographic colonography in patients with colorectal cancers and obstructing lesions.
        Dis Colon Rectum. 2000; 43: 303-311
        • Yee J
        • Akerkar G.A
        • Hung R.K
        • et al.
        Colorectal neoplasia.
        Radiology. 2001; 219: 685-692
        • McFarland E.G
        • Brink J.A
        • Pilgram T.K
        • et al.
        Spiral CT colonography.
        Radiology. 2001; 218: 375-383
        • Summers R.M
        • Beaulieu C.F
        • Pusanik L.M
        • et al.
        Automated polyp detector for CT colonography.
        Radiology. 2000; 216: 284-290
        • Macari M
        • Berman P
        • Dicker M
        • et al.
        Usefulness of CT colonography in patients with incomplete colonoscopy.
        AJR Am J Roentgenol. 1999; 173: 561-564
        • Hara A.K
        • Johnson C.D
        • MacCarty R.L
        • et al.
        Incidental extracolonic findings at CT colonography.
        Radiology. 2000; 215: 353-357