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胃肠道间质瘤45例临床病理分析 |
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作者:张润岐,姜风良,阎爱丽,李政委,宋福合,吴庚利 【关键词】 胃肠肿瘤;间皮瘤;病理形态学;免疫组织化学;诊断,鉴别 【Abstract】 AIM: To explore the clinicopathology of gastrointestinal stromal tumor(GIST)and its immunohistochemical features. METHODS: Observation and contrast analysis were made after the routine check and immunohistochemical staining in 45 GIST cases. RESULTS: GIST cells were more abundant than the typical leiomyoma cells and presented spindleshaped or epithelioid, or a coexistence of spindleshaped or epithelioid cells; in cytoplasm, the acidophilia decreased, and vacuoles were found arranged like intertexture, widespread lamellar, palisade or wheel radiation;typical cell nesting was formed;stroma or vessel wall showed a hyaline degeneration. CONCLUSION: GIST possesses unique histomorphological characteristics and the combination of CD117 and CD34 was helpful to differential diagnosis. 【Keywords】 gastrointestinal neoplasms; mesothelioma; pathomorphology; immunohistochemistry; diagnosis, differential 【摘要】目的: 探讨胃肠道间质瘤(GIST)的临床病理、免疫组织化学特点. 方法: 对45例发生在胃肠道的间质瘤行常规检查及免疫组织化学染色,进行观察和对比分析. 结果: GIST的肿瘤细胞较经典的平滑肌瘤更加丰富,胞质嗜酸性较弱,瘤细胞为梭形或上皮样,或梭形与上皮样细胞混合存在,胞质内常见空泡形成,排列成交织束状、弥漫片状、栅栏状或轮辐状,有较为特征的细胞团巢形成. 间质或血管壁玻璃样变性. 结论: GIST有较为独特的组织形态学特点,CD117和CD34联合应用有助于鉴别诊断. 【关键词】 胃肠肿瘤;间皮瘤;病理形态学;免疫组织化学;诊断,鉴别 胃肠道间质瘤(gastrintinal stromal tumors, GIST)是一种非定向分化的消化道间叶肿瘤,其形态多样,排列结构多样,与胃肠道典型平滑肌瘤、神经鞘瘤较难鉴别,我们应用CD117等一组抗体对GIST进行分析,观察GIST的临床表现、形态学特点,初步探讨GIST的良恶性参考指标. 1材料和方法 1.1材料收集存档标本,选取原发于消化道原诊断为胃肠道平滑肌瘤、平滑肌肉瘤或富于细胞平滑肌瘤、恶性神经鞘瘤等共86例. 参照GIST目前公认的组织形态学特点[1],并经免疫组织化学染色证实共筛选出GIST 45例进行分析. 1.2方法免疫组织化学染色采用SP法检测. 抗体选用Ckit(CD117), CD34, SMA, Vimentin及S100, 购置DAKO公司. 检测常规设置阳性和阴性对照,阳性肿瘤细胞胞质呈棕黄色,肿瘤细胞着色数>10%,则确定该病例为阳性,否则为阴性. 组织学良恶性判断标准: 参照Franquemont[1]提出的诊断标准,进行分类. ① 良性: 肿瘤直径<5 cm和核分裂像<1个/10HPF;② 中间性: 肿瘤直径≥5 cm和核分裂像≥2个/10HPF;③ 恶性: 肿瘤直径>5 cm和核分[1] [2] [3] [4] 下一页 上一个医学论文: 射频治疗鼻出血并发鼻中隔脓肿3例临床分析 下一个医学论文: 纳米银涂层尿管抗菌作用的临床对比研究
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