Title: Colonoscopy, tumors, and inflammatory bowel disease
Abstract: Narrow-band imaging (NBI) is a new technique that allows us to distinguish neoplastic and non-neoplastic lesions without chromoendoscopy, and should be very useful in detecting small or flat lesions missed by standard endoscopy. A study recently examined 148 colorectal lesions, 16 hyperplastic polyps, 84 tubular adenomas, and 48 early carcinomas [1]. Lesions were observed first under NBI magnification and then under standard magnification with chromoendoscopy. Correspondence between the two diagnostic methods was 88 % for type II, 100 % for type IIIs, 98 % for type IIIl, 88 % for type IV, 78 % for type Vi, and 100 % (3/3) for type Vn pit patterns. NBI depicted a brownish change on the basis of surface capillaries in 6 % of hyperplasia and 99 % of tubular adenomas (P < 0.005) [1] . In a second, prospective study, 180 colorectal lesions were observed with conventional colonoscopy, under low- and high-magnification NBI, and chromoendoscopy [2]. The diagnostic accuracy of NBI with low or high magnification was significantly higher than that of conventional colonoscopy (P = 0.0434 and P < 0.001), and was comparable to that of chromoendoscopy. Both low- and high-magnification NBI were capable of distinguishing neoplastic from non-neoplastic colorectal lesions [2].
Publication Year: 2007
Publication Date: 2007-12-05
Language: en
Type: review
Indexed In: ['crossref', 'pubmed']
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