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当前学科：胃、十二指肠疾病
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患者女性，30岁。间断性上腹痛4年，今日腹痛变为胀痛，出现呕吐，两大，呕吐物为隔夜宿食。查体：上腹部有振水音，转动体位，症状不能缓解，最可能的诊断是（）。
A . 肠系膜上动脉综合征
B . 胃黏膜脱垂
C . 消化性溃疡合并幽门梗阻
D . 胃癌
E . 胃下垂
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