Diagnostic process and retrospective analysis of detected colon cancers with special reference to early stages.

概要

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The following results were obtained from on analysis of colon cancers (155 cases, 166 lesions) detected through X-ray and endoscopy from among apparenthy healtly examines.<BR>1) The proportion of colon cancers missed upon initial examination was 1.6% among early cases and 4.7% among advanced cases.<BR>2) With regard to complaints, detectability in terms of hemorrhage was 8.4%, while asymptomatic detectability was 1.8%, the proportion of early cancers being 32% in the former and 91% in the latter.<BR>3) On the basis of 21 cases of follow-up cancers detected and analyzed retrospectively, sigmoid cancers wese considered most likely to be missed. Sessile and flat-topped elevations were also more likely to be missed when X-rays taken at initial examination were sciutini-zed.
日本大腸肛門病学会の論文