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Findings of the margin around lesions by magnifying endoscopy with narrow‐band imaging in early gastric carcinoma and intestinal metaplasia
Author(s) -
Hamada Kazu,
Itoh Tohru,
Kawaura Ken,
Azukisawa Sadafumi,
Kobayashi Rika,
Okamura Hideyuki,
Kitakata Hidekazu,
Urashima Sachio,
Nojima Takayuki,
Fujino Masayuki A
Publication year - 2016
Publication title -
journal of digestive diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 51
eISSN - 1751-2980
pISSN - 1751-2972
DOI - 10.1111/1751-2980.12352
Subject(s) - medicine , narrow band imaging , intestinal metaplasia , white blood cell , carcinoma , radiology , endoscopy , gastroenterology , cancer , pathology
Objective Many endoscopists have reported their own classifications of early gastric carcinoma (EGC) using magnifying narrow‐band imaging (M‐NBI). However, few reports on classifying the margin around lesions by M‐NBI have been published. The aim of this study was to advocate the usefulness of the demarcation area classification for the diagnosis of EGC. Methods Altogether 197 lesions that could be investigated by M‐NBI were included in this study, consisting of 115 EGC and 82 intestinal metaplasias (IM). We hypothesized that the changes in white zone (fusion and erasure signs) and blood vessel (extend and draw sign) were the indications of EGC and we retrospectively investigated this hypothesis. Results For the investigation of the white zone in the demarcation area, both fusion ( P < 0.0001) and erasure signs ( P < 0.0001) were observed more often in EGC than in IM, with an accuracy of 80.7%. For the investigation of blood vessel in the demarcation area, both the extend ( P < 0.001) and the draw sign ( P < 0.0001) were observed more often in EGC than in IM, with an accuracy of 59.9%. Conclusion Estimations of the white zone and blood vessels in the demarcation area are useful for the diagnosis of EGC.