15例胃肠道间质瘤的MRI回顾性分析
[摘要]目的 讨论胃肠道间质瘤(GIST)的MRI的影像诊断。方法 回顾性分析本院15例经手术及病理证实的GIST MRI影像特征。结果 15例GIST中12例边界清晰,可见不完整包膜及肿块内不规则坏死区,直径3~18cm。T1加权图像上呈较低信号或等信号,T2加权图像上呈不均匀等、高信号,增强扫描不均匀较明显强化;3例可见肿块内出血、坏死的MRI信号特点。结论MRI可清楚定位,对临床诊断该病提供了有价值的依据。
[关键词]胃肠道间质瘤; MRI
[中图分类号] R735 [文献标识码] A [文章编号] 1673-9701(2010)01-60-02
Magnetic Resonance Imaging of Gastro-intestinal Stromal Tumor:A retrospective Analysis of of 15 Cases
LUO Guoyao
Deparment of Radiology,Dongguan Municipal Changan Hospital,Dongguan 523843,China
[Abstract] ObjectiveTo discuss magnetic resonance imaging(MRI) characteristics of gastro-intestinal stromal tumors(GISTs). MethodsA retrospective analysis was made of the data of 15 cases of GISTs confirmed by postoperation and pathology. ResultsTwelve cases of 15 showed a clear boundary,incomplete capsule and irregular tumor necrosis,their diameter ranged from 3 to 18 cm,T1-weighted images showed low or equal signal,T2-weighted images showed asymmetric,high or equal signal,and enhanced scanning significantly enhanced non- uniformity. MRI signals showed necrosis and hemorrhage in 3 cases. ConclusionMRI can clearly locate GISTs,providing a valuable basis for the clinical diagnosis of the disease. ......
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