【摘要】 目的探讨胃肠道间质瘤的诊治及临床病理学特征。方法收集 2 6例胃肠道间质瘤的临床病理学资料 ,进行免疫组织化学染色 ,标记抗体为CD34、SMA和S 10 0蛋白。结果本组中胃间质瘤 14例 (5 4% ) ,小肠间质瘤 10例 (38% ) ,直肠间质瘤 2例 (8% ) ,其中恶性 2 0例 (77% )。肿瘤大小与良、恶性相关 (P <0 0 5 )。CD34、SMA、S 10 0蛋白阳性表达分别为 2 2例 (85 % )、12例 (46 % )和 7例(2 7% ) ,其阳性表达率与肿瘤良、恶性无关 (P >0 0 5 )。结论肿瘤的大小是胃肠道间质瘤良、恶性的重要指标 ,免疫表型与良、恶性无关。更多还原

【Abstract】 Objective To investigate the clinicopathologic features of gastrointestinal stromal tumors(GISTs). MethodsThe diagnosis and treatment results of GISTs were studied, and clinicopathologic features and immunohistochemical expressions of CD34, smooth muscle actin (SMA) and S-100 protein were detected in 26 cases of GISTs. ResultsThe tumor was found in the stomach(54%), small intestine(38%) and rectum(8%), and malignant tumors accounted for 77% of the cases. The size of tumors was correlated with the malignancy of GISTs significantly(P<0.05). The percentage of positivity of CD34, SMA and S-100 protein was 85%, 46% and 27%, respectively. There was no significant difference in the expression of CD34, SMA and S-100 protein in benign versus malignant GISTs(P>0.05). ConclusionsTumor size is a predictor of the malignancy of GISTs, and the immunophenotype is not a predictor.更多还原