Diagnostic of Superficial Neoplasm of Colon: Comparison of Barium Enema X-ray and Colonoscopic Examination Masao Ando 1 1Department of Gastroenterology, Sendai City Medical Center Keyword: 表面型大腸腫瘍 , 平坦陥凹型大腸腫瘍 , 注腸X線検査 , 内視鏡検査 pp.925-934
Published Date 1992/8/25
DOI https://doi.org/10.11477/mf.1403109954
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 We analyzed diagnostic procedures for superficial colorectal neoplasm focussing on x-ray examination. Most of the patients were asymptomatic at the time of examination. About 20% of cases of superficial colorectal neoplasm were diagnosed by x-ray examination, but some of them were not detected by the initial reading. It was an important clue in detecting lesions to find reddening or disappearance of the normal vascular permeability on colonoscopic examination. Radiologically, to find an elevated area of lucency was an important clue to detecting lesions, including depressed type. Sensitivity of routine barium enema examination was 56%, however, more detailed examination revealed 89% of the lesions. Factors which affect detection of superficial neoplasms on x-ray examination were macroscopic shape, size, location, and quality of x-ray imaging. Sensitivity in detecting depressed lesions was about 65%. The irregularly bordered lesions were easier to detect. Even ordinary x-ray equipment can, under certain circumstances, detect superficial neoplasms ineluding the minute depressed type. It seems important to control x-ray equipment condition and to read x-ray films carefully.

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