Interpretation and Accuracy of Conventional Radiography for the Diagnosis of Early Colorectal Cancer : Comparison with Colonoscopy Takayuki Matsumoto 1 , Mitsuo Iida 1 1Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University Keyword: 早期大腸癌 , X線検査 , 内視鏡検査 pp.885-897
Published Date 2003/5/25
DOI https://doi.org/10.11477/mf.1403100852
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 Findings obtained by barium enema examination (BE) and colonsocopy (CS) in 131 early CRCs were reviewed by two observers. The incidence of concordant findings was then compared between intramucosal CRCs with slight submucosal invasion (m/sm CRCs) and those with massive submucosal invasion (sm2/sm3 CRCs). Concordance rates of central depression were 91.6 % in BE and 90.8 % in CS. In CRCs positive for central depression, determination of the nature of depression in both BE and CS was significantly different between the two observers, while determination of the surface nature of marginal protrusion, fold convergency and eccentric rigidity were not different. In CRCs negative for depression, determination of configuration, surface features and fold convergency were concordant. In CRCs positive for central depression, obvious depression and eccentric rigidity using BE, and clear and amorphous depression using CS were positive more frequently in m/sm1 CRCs than in sm2/sm3 CRCs. In CRCs negative for central depression, there were two radiographic items (smooth surface and eccentric rigidity) which are more frequently positive in case of sm2/sm3 CRCs than in case of m/sm1 CRCs. Determination of surface feature was the only finding which was more frequently positive in the former than in the latter. These findings suggest that the interpretations of findings depicted by either BE or CS are quite similar, but BE findings are of special value for the diagnosis of invasion depth of CRCs, especially in case of protruding type lesions.

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