摘要
目的:探讨足底硬纤维瘤的MRI表现。方法:回顾性分析18例经手术病理证实的足底软组织硬纤维瘤患者的MRI资料。所有患者行MRI常规平扫,14例行增强检查。结果:18例中11例(61%)肿瘤发生于前足,5例(28%)发生于后足,2例(11%)发生于中足;形态上,肿瘤呈片状2例(11%),团块形4例(22%),不规则形12例(67%);边界不清6例(33%),边界尚清12例(67%)。肿块最大径为2.3~10.8 cm,中位数为3.7 cm。2例(11%)为多发病灶。MRI显示病灶在T1WI上呈等或等~低信号,T2WI及短时反转恢复序列(STIR)上呈稍高或高信号,但均低于脂肪组织的信号;15例(83%)可见病灶内信号不均匀,高信号区内有不同比例的星芒状或条带状低信号,1例(6%)病灶内可见点状出血信号;18例病灶内均未见囊变及钙化。增强扫描显示病灶内于T1WI、T2WI上呈低信号的区域无明显强化,其余部分呈较均匀明显强化。结论:足底硬纤维瘤的MRI表现具有一定特征性,MRI可为病变的诊断和鉴别诊断提供重要参考。
Objective:To analyze the MRI manifestations of plantar desmoid tumor.Methods:The MRI data of eighteen patients with plantar desmoid tumor proven by pathology were retrospectively analyzed.Plain MRI scan was performed in all the 18 cases,and contrast-enhanced MRI scan in 14 cases.Results:In the 18 cases,11(61%)tumors were located in the forefoot,5(28%)in the hind-foot and 2(11%)in the mid-foot.Sixteen masses(89%)displayed as ovate or irregular soft tissue mass,and two(11%)lesions as irregular patchy lesions.Six(33%)lesions were with obscure boundary,while 12(67%)lesions clear.The maximum diameters of the masses ranged from 2.3 to 10.8cm with an average of 3.7cm.Two(11%)cases were with multiple lesions.The signal intensity of the eighteen lesions were similar to or slightly lower than that of muscles on T1WI;hyper-intense or slightly hyper-intense on T2WI and STIR images,but lower than that of fat tissue.Fifteen(83%)lesions showed stellate-shaped or ribbon areas of low signal intensity on both T1WI and T2WI,and one(6%)lesion with punctated hemorrhage.No cystic change or calcification was found in all the 18 cases.On enhanced MR images,the low-signal intensity areas on T1WI and T2WI in the lesions were not enhanced,while the rest of the lesions were enhanced homogeneously.Conclusion:MRI findings of planter desmoid tumors are of characteristics.MRI plays an important role in the diagnosis and differential diagnosis of planter desmoid tumor.
作者
姚宁
于爱红
张晶
张薇
程晓光
宫丽华
YAO Ning;YU Ai-hong;ZHANG Jing(Department of Radiology,Beijing Jishuitan Hospital,Beijing 100035,China)
出处
《放射学实践》
北大核心
2020年第12期1585-1588,共4页
Radiologic Practice
基金
北京市卫生系统高层次卫生技术人才培养项目(2009-02-03,2013-3-033)。
关键词
足底肿瘤
硬纤维瘤
磁共振成像
软组织肿瘤
Planter tumor
Desmoid tumor
Magnetic resonance imaging
Soft-tissue neoplasm
