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胃肠道神经鞘瘤16例临床病理特征 被引量:27

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摘要 目的探讨胃肠道神经鞘瘤(gastrointestinal schwannomas,GSs)的临床病理学特征、免疫表型和鉴别诊断。方法对16例GSs进行形态观察,免疫组化标记,并结合相关文献进行讨论。结果肿瘤多见于胃部,临床表现多为腹部隐痛或进食哽噎,少数伴有黑便。肿瘤主要由纤细或肥胖的梭形细胞组成,胞质淡嗜伊红,细胞核可有一定异形性,排列成模糊的栅栏状,可见核仁,核分裂少见。多数病例可见外周淋巴细胞套及生发中心形成、或多或少的黏液变性区域、慢性炎细胞浸润和肿瘤边界的灶性浸润性生长。免疫组化:肿瘤细胞阳性表达S-100蛋白和GFAP,部分病例表达nestin,不表达CD34、CD117、DOG1和SMA。结论 GSs是消化道少见的间叶性肿瘤,绝大多数为良性,易误诊为胃肠道间质瘤(GISTs)。外周淋巴细胞套是重要的形态学特征之一,确诊需要依靠S-100蛋白、GFAP等免疫标记物配合。
出处 《临床与实验病理学杂志》 CAS CSCD 北大核心 2011年第3期307-310,共4页 Chinese Journal of Clinical and Experimental Pathology
基金 2009年浦东新区卫生系统中青年业务骨干培养基金
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参考文献13

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二级参考文献19

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