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01-06-2008 | Original Contribution

Preoperative T Staging of Colorectal Cancer by CT Colonography

Authors: Kenichi Utano, M.D., Kazuhiro Endo, M.D., Kazutomo Togashi, M.D., Ph.D., Junichi Sasaki, M.D., Ph.D., Hiroshi J. Kawamura, M.D., Ph.D., Hisanaga Horie, M.D., Ph.D., Yosikazu Nakamura, M.D., Ph.D., Fumio Konishi, M.D., Ph.D., Hideharu Sugimoto, M.D., Ph.D.

Published in: Diseases of the Colon & Rectum | Issue 6/2008

Abstract

Purpose

This study was designed to estimate the accuracy of CT colonography for the assessment of T stage in colorectal cancer.

Methods

CT colonograms obtained from 246 lesions were reviewed by 3 investigators. Intestinal wall deformity on shaded-surface display and rough appearance around the intestine were studied to assess their relations to T stage. Intestinal wall deformity was classified into arc type, trapezoid type, and apple-core type, defined as a trapezoidal wall deformity involving ≥50 percent of the circumference of the lumen.

Results

As for intestinal wall deformity, the rate of arc type was higher in Tis/T1 than in T2 (74 percent: 17/23 vs. 24 percent: 8/34, P < 0.0001); the rate of trapezoid type was 17 percent (4/23) in Tis/T1, 59 percent (20/34) in T2, and 15 percent (28/189) in T3/T4 (Tis/T1 vs.T2, P < 0.0001; T2 vs. T3/T4, P < 0.0001); and the rate of apple-core type was lower in T2 than in T3/T4 (18 percent: 6/34 vs. 81 percent: 154/189, P < 0.0001). Arc type, trapezoid type, and apple-core type were primarily associated with T1, T2, and T3/T4, respectively. When these criteria were used, the overall accuracy for T stage was 79 percent. Rough appearance was specific for T3/T4, but insensitive.

Conclusions

CT colonography can provide important information for the preoperative assessment of T stage in colorectal cancer.

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Title: Preoperative T Staging of Colorectal Cancer by CT Colonography
Authors: Kenichi Utano, M.D.
Kazuhiro Endo, M.D.
Kazutomo Togashi, M.D., Ph.D.
Junichi Sasaki, M.D., Ph.D.
Hiroshi J. Kawamura, M.D., Ph.D.
Hisanaga Horie, M.D., Ph.D.
Yosikazu Nakamura, M.D., Ph.D.
Fumio Konishi, M.D., Ph.D.
Hideharu Sugimoto, M.D., Ph.D.
Publication date: 01-06-2008
Publisher: Springer-Verlag
Published in: Diseases of the Colon & Rectum / Issue 6/2008
Print ISSN: 0012-3706
Electronic ISSN: 1530-0358
DOI: https://doi.org/10.1007/s10350-008-9261-0

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Preoperative T Staging of Colorectal Cancer by CT Colonography

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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