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Gastric Malignant Lymphoma and Reactive Lymphoid Hyperplasia: Its Chronological Changes and Pathological Diagnosis Yasushi Endoh 1 , Hidenobu Watanabe 1 , Mitsuya Iwafuchi 1 , Yoichi Ajioka 1 1The First Department of Pathology, Niigata University School of Medicine Keyword: 胃悪性リンパ腫 , RLH , MALToma , 年代別変遷 , 生検診断 pp.1013-1025
Published Date 1993/9/25
DOI https://doi.org/10.11477/mf.1403106255
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 The chronological changes in the ratio of gastric malignant lymphoma (ML) and reactive lymphoid hyperplasia (RLH), and as well as of histological types and macroscopic types of ML were studied by using 193 ML and 7 RLH cases surgically resected from 1965 to 1993. The ratio of RLH at original diagnosis has decreased every five years. Revised pathological diagnosis revealed that 44 of the 55 RLH cases (80%) at original diagnosis were malignant lymphoma, most of which had the features of MALToma. Only 7 cases (12.7%) were RLH, and the remaing four were follicular gastritis and chronic peptic ulcer. It seems to be the reasons for these changes that pathological criteria for ML had been affected by the conception of RLH proposed by Smith and Helwig in 1958, and the new conception of MALToma by Isaacson et al since 1983. As to histological types, diffuse, medium-sized cell type has increased, whereas diffuse, large cell type has decreased every five years. However, there was no significant change in the ratio of superficial-spreading type and mass-forming type macroscopically.

 The orginal histological diagnosis on biopsy sections revealed ML at 64% (29/45cases), but the revised diagnosis showed tumor cells in 73% (average) of all cases. The poliferating activity by Ki-67 staining and p53-positive overexpression were useful for the histological diagnosis of ML in biopsy sections.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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