Histological Grading in Gastric Cancer by Ming Classification: Correlation with Histopathological Subtypes, Metastasis, and Prognosis

Luebke, Thomas; Baldus, Stephan E.; Grass, Guido; Bollschweiler, Elfriede; Thiele, Jürgen; Dienes, Hans-Peter; Hoelscher, Arnulf H.; Moenig, Stefan P.
November 2005
World Journal of Surgery;Nov2005, Vol. 29 Issue 11, p1422
Academic Journal
The aim of this prospective study was to analyze Ming's classification in correlation with other currently used classification systems of gastric cancer. In addition, we wanted to define the prognostic significance of the Ming classification system. The present study analyzed material of 117 patients with gastric carcinoma who underwent D2-gastreotomy with curative intent. All specimens were catagorized according to International Union Against Cancer (UICC) classification, World Health Organization (WHO) classification, Borrmann classification, Lauren classification, Goseki classification, Ming classification, and tumor differentiation. For analysis of correlation between the classification systems, the correlation coefficient according to Spearman was calculated. The survival curves have been calculated according to the Kaplan-Meier method. According to the Ming classification, 38.5% of the carcinomas exhibited an expanding growth pattern, and 61.5% of specimens showed an infiltrating growth pattern. The subtypes according to the Ming and Lauren classification correlated significantly (P « 0,001). WHO classification (P « 0.001), tumor differentiation (P « 0.001), and Goseki classification (P « 0.001), as well as the macroscopic classification of Borrmann (P « 0.001) and the pT and pN categories of the UICC classification exhibited a highly significant correlation with the Ming classification (P « 0.001 and 0.001, respectively). Median overall survival was 31.3 months. In Kaplan-Meier analysis, the 3-year survival rates were lower in the infiltrative tumor type when compared to the expansive tumor type according to Ming (P = 0,0847). In multivariate analysis, only the UICC system presented as an independent prognostic factor in multivariate analysis (P« 0.001), This study shows that the Ming classification correlates significantly with the currently used classification systems for gastric cancer and with the UICC staging system, especially, the pT and pN category. The 3-year survival rates were lower in the infiltrative tumor type than in the expansive tumor type according to Ming. However, the Ming classification is not an independent prognostic factor.


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