隆突性皮肤纤维肉瘤的影像学诊断价值

The image diagnostic value of dermatofibrosarcoma protuberans

目的 :探讨隆突性皮肤纤维肉瘤的影像学表现。方法:回顾性分析温州医科大学附属第二医院2008年9月至2012年6月间经手术病理证实的隆突性皮肤纤维肉瘤4例,1例行MRI平扫及增强检查,1例行CT检查,另外2例行X线检查。结果:3例为单发,1例为多发,发病部位躯干和头颅各1例,下肢2例,4例均表现为边界清楚的类圆形或椭圆形软组织肿块;X线及CT表现为较周围软组织密度稍高,MRI表现为在T1WI呈等信号,在T2WI呈稍高信号影,在脂肪抑制序列呈明显高信号影,钆喷酸葡胺(Gd-DTPA)增强扫描病灶呈不规则强化。结论:MRI对隆突性皮肤纤维肉瘤的准确诊断较X线及CT更具特征性,有助于对本病进行术前评估及术后评价。

Objective： To discuss image features of dermatofibrosarcomap rotuberans （DFSP）. Methods： Image features in 4 pathologically confirmed DFSP were analyzed. MR imaging and gadolinium-enhanced scan was performed in one case, one case was examined by CT scanning, the other 2 cases were scanned by x-ray. Results： Single lesion was found in 3 cases,and multiple lesions were found in 1 case, one of them located in trunk and in head, the other two cases were located in extremities. All 4 cases were showed a clear boundary of the round or oval soft tissue masses; The X-ray and CT findings were slightly higher than the surrounding soft tissue of density, MRI showed isosignal intensity on T1WI, hypersignal intensity on T2WI and slightly hypersignal intensity in STIR, After intravenous injection of Gd-DTPA, the lesions showed irregular enhanced remarkably. Conclusion： The MRI imaging features is more characteristic than that of X-ray and CT, we should pay attention to the application of MRI scanning in the preoperative assessment and postoperative evaluation of DFSP.