Microstructure characteristics of antrum gastritis by using magnified narrow band imaging
10.3760/cma.j.issn.1007-5232.2012.05.008
- VernacularTitle:放大窄带成像胃镜下胃窦炎微形态特征
- Author:
Hong LIU
;
Bingxia GAO
;
Xiangchun LIN
;
Nan WEI
;
Fangxun LIU
;
Jing WU
- Publication Type:Journal Article
- Keywords:
Gastritis;
Histology;
Diagnosis;
Magnified narrow band imaging
- From:
Chinese Journal of Digestive Endoscopy
2012;29(5):268-271
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo determine the features of antrum gastritis by magnified narrow band imaging (M-NBI) and to evaluate the feasibility of target biopsy with M-NBI.MethodsA total of 69 consecutive patients who underwent M-NBI were recruited in the study.The gastric mucosa of antrum was observed under M-NBI and the gastric microstructure patterns were classified into 5 type.M-NBI findings were compared with the conventional histological findings.In addition,the interobserver agreement was assessed.ResultsA total of 173 gastric antral sites from 69 patients were examined by M-NBI.Type A was mainly normal sites (89.8％,44/49),while type B and C were chronic inflammation (53.3％,24/45 )and active inflammation (74.3％,26/35).Compared with the type A group,the inflammatory degree in type B (P＜0.001 ) group and type C group (P＜0.001) was significantly higher.The sensitivity,specificity,accuracy of the type B and type C pattern for predicting antrum gastritis were 87.5％,78.0％ and 81.5％.The sensitivity,specificity,accuracy of the type D and type E pattern for predicting intestinal metaplasia of antrum were 83.8％,90.4％ and 77.5％,respectively.The kappa value for the interobserver agreement was 0.734 [ 95％ CI(0.591-0.977 ) ].ConclusionMicrostructure features of antrum gastritis determined by M-NBI are highly correlated with histopathology,and can evidently help diagnosis.
