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DOI: 10.1055/s-0030-1256236
© Georg Thieme Verlag KG Stuttgart · New York
Risk of high-grade dysplasia or carcinoma in gastric biopsy-proven low-grade dysplasia: an analysis using the Vienna classification
Publication History
submitted 15 March 2010
accepted after revision 27 November 2010
Publication Date:
21 March 2011 (online)

Background and aims: Therapeutic guidelines have not yet been established for low-grade gastric adenomas/dysplasias (LGD), which have a low risk of progression to high-grade adenomas/dysplasias (HGD) or to invasive carcinomas. This study aimed to evaluate risk factors for HGD/carcinoma that indicate a need for resection in biopsy-proven LGD lesions.
Patients and methods: In total, 236 LGD lesions from 208 consecutive patients treated with endoscopic resection (ER) were retrospectively studied between 2004 and 2008. The Vienna classification was used for histological diagnosis. A generalized estimating equation (GEE) logistic regression model was used for multivariate analysis.
Results: Among the 236 LGD lesions, the final pathology diagnosed 9 (3.8 %) as invasive carcinoma (category 5), 71 (30.1 %) as HGD (category 4), 148 (62.7 %) as LGD (category 3), and 8 (3.4 %) as negative/indefinite for dysplasia (category 1/2). Lesions ≥ 1 cm were classified as HGD/carcinoma in 39.4 % of patients (65/165). Multivariate analysis indicated that size of ≥ 1 cm (OR 1.93 [95 % CI, 1.06 – 3.52]), depressed morphology (OR 3.81 [95 % CI, 1.22 – 11.9]), and erythema (OR 2.49 [95 % CI, 1.31 – 4.72]) were significantly associated with HGD/carcinoma. The OR increased to 47.6 (95 % CI, 4.27 – 530.65) when the risk factors were all positive. The sensitivity and negative predictive value for ≥ 1 risk factors were 93.8 % and 90.9 %, respectively. As the number of risk factors of a lesion increased, the specificity and positive predictive value also increased.
Conclusions: Endoscopic resection can be recommended if a low-grade dysplastic lesion has at least one of the following risk factors: depressed morphology, surface erythema, or a size of 1 cm or greater. For lesions that have none of the three risk factors, follow-up endoscopy is recommended.
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I. J. ChoiMD, PhD
Center for Gastric Cancer
National Cancer Center
111 Jungbalsan-ro
Ilsandong-gu
Goyang
Gyeonggi 410-769
Republic of Korea
Fax: +82-31-9201127
Email: cij1224@hanmail.net