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炎性肌纤维母细胞瘤的MSCT和MRI诊断.pdf

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炎性肌纤维母细胞瘤的MSCT和MRI诊断.pdf
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敦射学实践2009年!1月第24雀算■L褪Radiol_praetiee』OV 2009,Vol 241No.11炎性肌纤维母细胞瘤的MSCT和MRI诊断●1247骨骼肌肉影像学 ●王娟,樊长妹,柯祺,张家雄,毛荣军【摘要】 目的:探讨炎性肌纤维母细胞瘤(IMT)的MSCT和MRI表现及其临床诊断价值。方法:回顾性分析经手术病理证实的15例IMT患者的CT和MRI表现,其中11例行cT检查,4例行MRI检查。结果:15例中病变发生于腹腔9例、鼻窦和鼻腔1例、肺部2例、左侧腮腺1例、肘关节及膝关节周围各1例。主要CT和MRI表现为肿块密度及信号不均匀,儿例出现囊变、坏死,增强后肿块实性部分呈均匀或不均匀中度或明显强化,坏死、囊变区无明显强化,2例关节周围肿块可见包膜。病理示肿瘤由梭形细胞及炎症细胞组成,免疫组织化学染色肌源性蛋白阳性表达。结论:CT和MRI检查对IMT的定位和定性诊断及鉴别诊断具有一定价值,但IMT的确诊有赖于组织病理学及免疫组织化学检查。【关键词】肌纤维母细胞瘤;体层摄影术。X线计算机;磁共振成像;病理学 77【中图分类号】R814.42;R445.2;R738.7【文献标识码】A【文章编号】1000—0313(2009)1l一1247—04Analysis of Multi-slice CT and MRI Manifestations of Inflammatory Myofibroblastic Tumor WANG J uan,Fan Chang—shu,Ke Qi,et a1.Department of Radiology,Foshan Hospital of Traditional Chinese Medicine,Guangzhou University of ChineseMedicine,Guangdong 528000,P.R.China[Abstract]Objective:To investigate the multi-slice spiral CT(MSCT)and MRI features of inflammatory myofibro—blastic tumor(IMT)and their value in the clinical diagnosis.Methods:The CT and MRI findings of 15 cases with pathologyproven IMT were retrospectively analyzed.Of which。1I cases had MSCT and 4 cases had MRI.Results:The anatomic loca-tions of tumors in these 15 patients included abdominal cavity(n=9),lung(n=2),nasal sinuses and nasal cavity(n51),left parotid gland(n一1),soft tissue surrounding elbow joint and knee joint for one patient each.The main CT and MRIfindings of the tumors were non—homogeneous attenuation and signal intensities with moderate or obvious enhancement aftercontrast injection,cystic and necrotic changes could be seen and without marked enhancement.Capsule could be revealed inthe pert—articular soft tissue mass.Tumors were mainly composed of spindlmshaped fibrous cells and inflammatory cells onpathology.On immunohistochemistry staining,positive expression of muscle deriving proteins was observed.Conclusion:Thefinal diagnosis of IMT relies on pathology and immunohistochemistry study,multi—slice spiral CT and MRI examination pro—vides information of accurate an
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