胃肠道间质瘤的MSCT及MRI诊断价值探讨

目的探讨MSCT及MRI检查在GIST诊断中的价值,以提高诊断准确性。方法回顾性分析经手术、病理及免疫组化证实的30例GIST患者的临床及影像资料。结果 30例肿瘤患者中,单发28例,多发2例;发生于胃22例,小肠8例;表现为类圆形或分叶状肿块,长径2～19cm,体积较小者密度/信号均匀;体积较大者密度/信号不均匀,多数伴有坏死、囊变或出血区,增强扫描肿瘤实质部分中度或明显不均匀强化,静脉期较动脉期显著,坏死、囊变或出血区未见强化。结论 MSCT、MRI对GIST的定位及定性诊断有重要价值。

The value of MSCT and MRI in diagnosis of gastrointestinal stromal tumors

Objective To explore the value of multislice CT （MSCT） and magnatic resonance imaging （MRI） in diagnosis of gastrointestinal stromal tumors （GIST）,in order to improve diagnostic accuracy.Methods Clinical and imaging data of GIST in 30 cases which confirmed by surgery,pathology and immunohistochemical stain were retrospectively analyzed.Results Twenty-eight of 30 cases showed single lesion and 2 cases showed multiple lesions.22 cases were located stomach and 8 cases in small intestine.The images of these cases showed that masses were round or lobulated,the diameter were 2 cm to 19 cm;the images showed that the uniformity density or signal was appeared in little volume cases and inhomogenous density/signal was appeared in large volume cases,most cases accompanied by necrosis,cystic or hemorrhagic areas.On enhanced scans,moderate or marked inhomogenous enhancement was seen in the substantial part of the tumor which was better visualized in venous phase than in arterial phase and enhancement was not seen in the necrosis,cystic or hemorrhagic areas.Conclusion MSCT,MRI would play important roles in definite the position and diagnosis of GIST.