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目的分析隆突性皮肤纤维肉瘤(DFSP)的MRI表现,探讨MRI对DFSP的诊断价值。方法回顾性分析12例经病理证实的DFSP患者的影像资料,男7例、女5例,总结其影像特点。结果 12例病变位置均较表浅,3例与皮肤分界不清,9例分界清,其中8例与皮肤间距离<3 mm,1例>5 mm。病变大小3.2~15.6 cm,平均8cm。病变形态呈扁丘状、卵圆形、分叶状,3例呈多结节聚合状,1例见子结节外突。与肌肉相比,在T_1WI上3例呈稍低信号,5例呈等信号,4例呈稍高信号;在T_2WI上11例呈高信号,1例为稍高信号。6例行增强检查,5例明显强化,1例呈中度强化。结论 DFSP的MRI表现具有一定特征性,MRI检查可帮助其诊断。
Objective To analyze the MRI findings of dural fibrosarcoma (DFSP) and investigate the diagnostic value of MRI for DFSP. Methods A retrospective analysis of 12 cases of pathologically confirmed DFSP imaging data, 7 males and 5 females, summarizes the imaging features. Results All the 12 lesions were superficial. The demarcation between the three cases and the skin was unclear, and the demarcation was clear in nine cases. The distance between the eight cases and the skin was less than 3 mm and one case was more than 5 mm. Lesions size 3.2 ~ 15.6 cm, an average of 8cm. Lesions showed flat mound, oval, lobulated, three cases were multi-nodular polygamy, a case of see nodules outside the sudden. Compared with the muscle, 3 cases showed slightly lower signal on T_1WI, 5 cases showed equal signal, and 4 cases showed slightly higher signal; on T_2WI, 11 cases showed high signal and 1 case showed slightly higher signal. 6 cases of enhanced examination, 5 cases significantly enhanced, 1 case was moderately enhanced. Conclusion The MRI features of DFSP have certain characteristics. MRI examination can help its diagnosis.