Intest Res.  2014 Jan;12(1):60-65. 10.5217/ir.2014.12.1.60.

The Effect of Indigocarmine on Improvement of the Polyp Detection Rate during Colonoscopic Examination with Hood Cap

• Kwon SC
• Choi SW
• Choi SH
• Park HS
• Lee SH
• Kim BG
• Seo EH
• Jang M
• Ryu SM
• Kim DH
• Kim YH
• Ha JO
• Lee JS

• KMID: 2174339
• DOI: http://doi.org/10.5217/ir.2014.12.1.60

Abstract

BACKGROUND/AIMS
Hood cap-assisted chromocolonoscopy using indigocarmine is expected to improve the detection rate of colorectal polyps, especially adenomatous polyps. Therefore, aim of the present study was to evaluate the usefulness of hood cap-assisted chromocolonoscopy in routine colonoscopic examinations.
METHODS
From January, 2013 through March, 2013, a total of 86 patients were enrolled (M:F=33:53, mean age=60 years). For each patient, hood cap-assisted colonoscopic examination was performed, followed by hood cap-assisted chromocolonoscopy using 0.2% indigocarmine from the cecum to the hepatic flexure. Total numbers and characteristics of polyps were compared before and after indigo carmine dye spraying.
RESULTS
Prior to dye spraying, 48 polyps were found in 37 patients, and after dye spraying, 53 additional polyps were found in 34 patients. Of these undetected polyps, 45 (85%) were small sized polyps (< or =0.5 cm). Histologically, 19 (36%) were adenomatous polyps, and of these, 15 (28%) were tubular adenomas and 4 (8%) were serrated adenomas. As for the polyp detection rate, there was no difference between the expert and the non-expert groups.
CONCLUSION
Hood cap-assisted chromocolonoscopic examination using indigocarmine was helpful in detecting cecum and ascending colon polyps, especially small sized polyps (<0.5 cm) and neoplastic polyps.

Keyword

Colonoscopy; Hood cap; Indigocarmine; Polyps; Adenoma

MeSH Terms

Adenoma
Adenomatous Polyps
Cecum
Colon, Ascending
Colonoscopy
Humans
Indigo Carmine
Polyps*
Indigo Carmine

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