隆突性皮肤纤维肉瘤的高频超声及剪切波弹性成像表现

Features of high frequency ultrasonography and shear wave elastography in dermatofibrosarcoma protuberans

目的:探讨高频超声及剪切波弹性成像(SWE)对隆突性皮肤纤维肉瘤(DFSP)的诊断价值。方法:回顾性分析21例经病理证实为DFSP患者的高频超声及SWE资料。结果:21例均为单发,好发于躯干(9例)。21例病灶均侵犯真皮全层并向皮下脂肪层浸润,19例病灶内部以低回声为主、并可见不规则的斑片状高回声,16例覆盖于病灶表面的表皮变薄。特征性表现:18例病灶旁真皮及深面脂肪层可见稍高回声与正常组织的过渡带,10例SWE可见真皮层内的瘤体比脂肪层内瘤体硬。结论:DFSP具有特征性高频超声及SWE表现,两者在该病的诊断中起重要作用。

Objective:To describe the features of high frequency ultrasonography and shear wave elastography(SWE)in dermatofibrosarcoma protuberans(DFSP)and to investigate the diagnostic value of the two methods.Methods:A total of 21 cases with DFSP were collected,and all cases underwent high frequency ultrasonography and 13 cases underwent SWE.Results:21 cases were all presented solitary nodules which were commonly located in trunk(9 cases).All of the lesions infiltrated full of the dermis layer and the subcutaneous fat layer.The internal of the lesions were mainly hypoecho mixed with patchy hyperecho(19 cases),and the epidermis overlying DFSP showed thin(16 cases).A slightly transition from hyperecho to normal tissue(18 cases)and the tumor in the dermis layer harder than that in the subcutaneous fat layer(10 cases)showed by SWE were the features of DFSP.Conclusions:DFSP has specific sonographic and elastographic features which can be used to diagnose it accurately.