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  • Title: [A clinicopathological study of early gastric cancers with a diameter larger than five centimeters].
    Author: Yamagawa H, Onishi T.
    Journal: Gan No Rinsho; 1989 Sep; 35(10):1114-8. PubMed ID: 2550682.
    Abstract:
    Out of a total of 1,112 resected early gastric carcinomas, 181 that were larger than 5 cm in diameter have been pathologically investigated. Of these, intramucosal and submucosal carcinomas amounted to 68 (37.6%) and 113 (64.4%), respectively. The incidence of their location, shown as a percentage, was 37.8% in the antrum, 57.4% in the corpus, and 4.8% in the fundus (11% in the anterior wall, 13.2% in the posterior wall, 68.1% in the lesser curvature, and 7.7% in the greater curvature). Grossly, the incidence of a type IIc carcinoma was 46.5% and that of a IIc + III type was 20.5%, respectively. Microscopically, in the intramucosal cases, signet ring cell carcinomas were the most frequent histological type, whereas in the invasive submucosal cases, the carcinomas were the intestinal metaplastic type. Lymphatic invasions, venous invasions, and lymph nodal metastases amounted to 32.6%, 6.1%, and 11.6%, respectively. In the early gastric carcinomas, the larger the tumor size, the more likelihood of a signet ring cell carcinoma than a intestinal metaplastic type, and it appeared that a signet ring cell carcinoma had infiltrated the propria mucosae for a longer time when compared to either an intestinal metaplastic type carcinoma or a poorly differentiated tubular adenocarcinoma.
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