【摘要】 目的探讨CT对胃肠道间质瘤和平滑肌源性肿瘤的诊断价值。方法回顾性分析经手术病理证实的胃肠道间质瘤15例(均经免疫组化确诊)和平滑肌源性肿瘤7例(其中2例经免疫组化确诊)的CT表现。结果 CT下可见胃肠道间质瘤和平滑肌源性肿瘤的软组织肿块发生在粘膜下,其中良性肿瘤密度均匀、边缘光整,而恶性肿瘤可有囊变、边界不清、累及周围组织;胃肠道间质瘤和平滑肌源性肿瘤在发生部位、大小、形态、生长方式、淋巴结转移、密度、边缘、CT强化后表现以及囊变、气液平等方面无明显区别。结论①CT对胃肠道间质瘤和平滑肌源性肿瘤的诊断有较大的价值;②从CT表现上无法区分胃肠道间质瘤和平滑肌源性肿瘤,最后确诊还需依赖免疫组化和电镜技术。更多还原

【Abstract】 Objective To investigate the value of CT in diagnosis of gastrointestinal stromal and smooth muscle-derived tumors. Methods Analysed the CT appearances of 15 cases of gastrointestinal stromal tumors (all confirmed by immunohistochemistry) and 7 cases of smooth muscle-derived tumors (2 of which confirmed by immunohistochemistry ) confirmed by surgeries and pathology. Results From CT appearances we can see that if the mass occurred under submucosa,the density of all benign tumors is uniform and the boundary is clear,while the malignant tumors may have cystic degeneration,the boundary is unclear,and could involve the surrounding tissue. There are no significant differences in the point of location,size,shape,growth pattern,lymph node metastasis,density,boundary,CT enhanced performance and cystic change between gastrointestinal stromal tumors and smooth muscle-derived tumors. Conclusions ①CT has a great value on the diagnosis of gastrointestinal stromal tumors and smooth muscle-derived tumors; ②From the performance of the CT gastrointestinal stromal tumors and smooth muscle-derived tumors can not be distinguished,so the confirmed diagnosis need rely on immunohistochemistry and electron microscopy.更多还原