malignant change of ulcer
malignant change of ulcer
溃疡的恶性改变
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Objective: the aim of our study was to explore the incidence, pathogenesis and clinical features of malignant change of gastric ulcer.
目的：研究胃溃疡癌变的发病率、发病机理及临床特点。
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