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Retrospective Radiographic Study of Colonic Carcinoma K. Ushio 1 , M. Sasagawa 1 , T. Yamada 1 , Y. Koyama 2 , T. Hirota 3 , H. Ichikawa 1 1Department of Diagnostic Radiology, Surgery and Pathology, National Cancer Center Hospital pp.537-547
Published Date 1979/4/25
DOI https://doi.org/10.11477/mf.1403107664
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 With the recent discovery of many small polypoid lesions in the colon, there is increasing interest in studies on the biological characteristics of colonic carcinoma, such as the relation between adenoma and qualitative differences between pedunculated and sessile polypoid lesions. However, the types of lesions that develop into cancer of the colon and especially how they develop into advanced cancer have not been studied enough for all questions to be answered. We have collected and studied films of double contrast enema taken from patients who were operated on at the National Cancer Center Hospital in Tokyo. A retrospective radiographic study was made in 6 cases (4 cases of advanced cancer and 2 cases of early cancer) and the following findings were obtained.

 1. The initial X-ray film of the six cases showed flat and sessile elevated lesions ranging in size from 7 to 14 mm in diameter.

 2. In four of the six cases, an adenomatous area could be found within the same lesion indicating the malignant potential of the adenoma.

 3. The growth of the flat type of elevated lesion was relatively slow in two of the six cases. One of them was a 7 mm elevation in diameter which took 6 years and 2 months to develop into a 29 mm advanced cancer and the other one was a 13 mm elevation in diameter which took 5 years and 6 months to develop into an advanced cancer of 70 mm in diameter.

 4. It seemed that there were individual differences in the growth rate of flat and sessile type of elevated lesions. In one case a 10 mm lesion in diameter developed in 2 years into an advanced cancer and in another case in 2 years and a half. It took 4 years in one case and 4 years and 2 months in the other for the same size lesion to develop into early colonic cancer.

 These findings indicate that elevated lesions which have these characteristics, flat, sessile and around 10 mm in size, are very important in relation to malignancy or canceration.


Copyright © 1979, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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