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原发性胃肠道外间质肿瘤10例临床病理分析 被引量:1

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摘要 目的探讨原发性胃肠道外间质肿瘤(EGIST)的临床病理特征,免疫组化特点和鉴别诊断要点。方法选择10例EGIST,观察其临床、组织形态学、免疫组化特点以及预后。结果巨检肿瘤最大长径3~17cm(中位数6.9cm),2例累及胰腺实质,其余8例界限相对清楚;切面灰白灰黄,3例可见囊性变,2例可见坏死,2例可见出血,1例粘液变性。镜下4例以梭形细胞为主,3例由混合性的上皮样和梭形细胞构成,3例以上皮性细胞为主(其中1例伴广泛的黏液变性)。危险度分级:4例高危,3例中危,3例低危。免疫组化染色:9例表达DOG1,8例表达CD117,6例表达CD34,10例肿瘤至少表达上述3个标志物中的2个;3例局灶表达SMA,2例分别局灶表达S100和desmin,Ki67增殖指数8%~65%。结论 EGIST生物学行为以中高危险度为主,组织形态学与胃肠道发生的GIST相似,免疫组化染色表达DOG1、CD117和CD34。
机构地区 嘉兴市第二医院
出处 《浙江实用医学》 2017年第4期276-278,共3页 Zhejiang Practical Medicine
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