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胃肠道间质瘤的多层螺旋CT诊断

Journal of Practical Medical Imaging(2013)

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Abstract
目的 探讨胃肠道间质瘤(GIST)的影像学表现特点.方法 回顾性分析经手术病理证实的37例GIST的16层螺旋CT表现,全部病例均行CT平扫和增强扫描.结果 37例GIST中发生于胃23例,小肠8例,结肠3例,肠系膜3例.位于消化道的34例中,瘤体位于消化道腔外27例,腔内、外混合生长7例.CT表现:肿块密度均匀5例,不均匀32例,增强后均匀强化4例,不均匀强化33例,动脉期肿块实性部分轻中度强化,静脉期强化较动脉期更明显,呈中度或明显强化.结论 胃肠道间质瘤CT主要表现为胃肠道腔外生长为主的软组织肿块,易囊变坏死,增强后动脉期肿块实性部分强化,静脉期强化较动脉期更明显,以肝脏和系膜转移较为常见,淋巴结转移、腹腔积液及肠梗阻较为少见.
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Key words
msct diagnosis,tumor
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