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Dye Spraying and Magnifying Endoscopy for Dysplasia and Cancer Surveillance in Ulcerative Colitis

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Diseases of the Colon & Rectum

PURPOSE

The aim of this study was to investigate detection of dysplasia or colitic cancer with ulcerative colitis by use of magnifying endoscopic observation.

METHODS

From 1986 through 2000, ulcerative colitis was diagnosed and treated in 886 patients at Kitasato University East Hospital. Of the total, we studied 25 patients in depth: 14 who had dysplasia alone, 5 in whom cancer was diagnosed during follow-up after the detection of dysplasia, and 6 who had colitic cancer.

RESULTS

Dysplasia was detected in 11 (3.2 percent) of 345 patients with extensive colitis and in 8 (3.7 percent) of 217 with left-sided colitis. Colorectal cancer was diagnosed in nine patients (2.6 percent) with extensive colitis and in two (0.9 percent) with left-sided colitis. Neither dysplasia nor colitic cancer was found in patients with proctitis-type colitis. Endoscopically, dysplasia and early cancer were characterized by granular or nodular protruding mucosa or by lowly protruding or flat mucosa, often associated with redness. Dye-spraying endoscopy was useful for detection. Magnifying endoscopy of ten regions of dysplasia (7 patients) and five early cancers (4 patients) showed IIIS to IIIL type pits or IV type pits. Biopsy of sites showing tumorous pits on magnifying endoscopy revealed dysplasia and early cancer. Observation of the pit pattern was found to be diagnostically useful.

CONCLUSIONS

Dye spraying and magnifying endoscopy are useful for the detection, targeted biopsy, and diagnosis of dysplasia and colitic cancer in patients with ulcerative colitis.

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Authors and Affiliations

  1. Department of Gastroenterology, Kitasato University East Hospital, Sagamihara, Japan

    Miwa Sada M.D., Masahiro Igarashi M.D., Shigeru Yoshizawa M.D., Kiyonori Kobayashi M.D., Tomoe Katsumata M.D. & Katsunori Saigenji M.D.

  2. Department of Surgery, Kitasato University East Hospital, Sagamihara, Japan

    Yoshimasa Otani M.D.

  3. Department of Pathology, Kitasato University East Hospital, Sagamihara, Japan

    Isao Okayasu M.D.

  4. Department of Pathology, National Sagamihara Hospital, Sagamihara, Japan

    Hiroyuki Mitomi M.D.

Authors
  1. Miwa Sada M.D.
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  2. Masahiro Igarashi M.D.
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  3. Shigeru Yoshizawa M.D.
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  4. Kiyonori Kobayashi M.D.
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  5. Tomoe Katsumata M.D.
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  6. Katsunori Saigenji M.D.
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  7. Yoshimasa Otani M.D.
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  8. Isao Okayasu M.D.
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  9. Hiroyuki Mitomi M.D.
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Sada, M., Igarashi, M., Yoshizawa, S. et al. Dye Spraying and Magnifying Endoscopy for Dysplasia and Cancer Surveillance in Ulcerative Colitis. Dis Colon Rectum 47, 1816–1823 (2004). https://doi.org/10.1007/s10350-004-0682-0

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  • DOI: https://doi.org/10.1007/s10350-004-0682-0

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