皮肤隆突性纤维肉瘤的超声表现

目的：研究皮肤隆突性纤维肉瘤的超声表现,提高其诊断准确性。方法：回顾分析10例病理证实为皮肤隆突性纤维肉瘤患者的超声检查资料。结果：10例患者中,9例肿瘤位于皮肤浅表,紧贴皮肤,1例肿瘤位于乳腺内。其灰阶超声表现有3种：（1）＂洋葱皮型＂肿瘤6个,肿瘤平均最大径41mm,均呈卵圆形;其中4例呈分叶状,边界清晰,肿瘤内见低回声区,内部及周边见粗大分层状高回声区;（2）回声均匀型3例,肿瘤平均最大径17mm,均呈卵圆形,边界清晰,肿瘤呈低回声或稍低回声;（3）回声杂乱型1例,肿瘤最大径170mm,内见高回声及低回声区,杂乱分布。彩色超声示2个最小肿瘤无明显血流信号;其余8个血流丰富,呈网状,平均阻力指数0.57。结论：皮肤隆突性纤维肉瘤有一定特征性超声表现,超声检查有助肿瘤诊断。

The Sonographic Features of Dermatofibrosarcoma Protuberans

Objective：To evaluate the sonography features of dermatofibrosarcoma protuberans and improve diagnosis capability.Methods： The clinacal data of ten cases of histologically proved dermatofibrosarcoma protuberans were retrospectively reviewed.Results：Nine tumors localized in the dermis,one tumor in the breast.Gray scale sonography showed three patterns.Onion skin-like were found in 6 tumors.The average size was 41 mm.All masses were oval-shaped well defined with four lobulated.The internal echogenecity was inhomogeneous with hypoechoic areas and wide hyperechoic bands.Homogeneous echogenicity were found in 3 tumors.The average size was 17 mm.All masses were oval-shaped well defined and hypoechoic.Mixed echogenicity was found in one tumor and the size was 170 mm.The internal echogenicity was heterogeneous with hypoechoic and hyperechoic areas.Blood flow signal was not seen in the smallest two tumors,and scattered areas of hypervascularity were seen in the other eight tumors.The average resistive index was 0.57.Conclusions：The sonographic appearances of dermatofibrosarcoma protuberans are characteristic,and it is helpful for the diagnosis of dermatofibrosarcoma protuberans.