Role of enhanced visibility in evaluating polyposis syndromes using a newly developed contrast image capsule endoscope

Ken Hatogai, Naoki Hosoe, Hiroyuki Imaeda, Jean Fraņois Rey, Sawako Okada, Yuka Ishibashi, Kayoko Kimura, Kazuaki Yoneno, Shingo Usui, Yosuke Ida, Nobuhiro Tsukada, Takanori Kanai, Toshifumi Hibi, Haruhiko Ogata

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Background/Aims: A flexible spectral imaging color enhancement system was installed in new capsule software for video capsule endoscopy. Contrast image capsule endoscopy (CICE) is a novel technology using light-emitting diodes selected for the main absorption range of hemoglobin. We assessed the feasibility and diagnostic effi cacy for small bowel surveillance in patients with polyposis syndromes. Methods: Six patients with polyposis syndromes, four with familial adenomatous polyposis and one each with Cowden syndrome (CS) and Cronkhite-Canada syndrome (CCS) were examined using CICE. We conducted three evaluations to assess the effect on the numbers of the detected polyps; compare polyp diagnostic rates between adenoma and hamartoma; and assess polyp visibility. Results: The numbers of detected polyps and diagnostic accuracy did not differ signifi cantly between pre-contrast and contrast images. However, 50% of the adenomatous polyps displayed enhanced visibility on contrast images. CICE contrast images exhibited clearly demarcated lesions and improved the visibility of minute structures of adenomatous polyps. Hamartomatous polyp micro-structures in patients with CS and CCS were more clearly visualized on contrast than pre-contrast images. Conclusions: CICE is an effective tool for enhancing the visibility of polyps in patients with polyposis syndrome.

Original languageEnglish
Pages (from-to)218-222
Number of pages5
JournalGut and Liver
Issue number2
Publication statusPublished - 2012 Apr


  • Contrast image capsule endoscopy
  • Image enhanced endoscopy
  • Polyposis syndrome
  • Video capsule endoscopy

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology


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