子宫内膜间质肉瘤的MRI表现

目的 分析子宫内膜间质肉瘤(ESS)的MRI表现特点,探讨MRI在其临床应用中的价值.方法 收集本院经手术病理证实的ESS 13例,术前均行MRI平扫及扩散加权成像(DWI)扫描,其中10例同时行增强扫描,结合手术后病理结果分析其MRI表现.结果 13例病例中,位于宫腔6例、子宫肌层4例、子宫右侧壁及阔韧带1例、宫颈1例、阴道顶端及盆腔内1例.在MRI平扫上表现为突向宫腔或位于肌层的息肉状或多发结节状肿块,呈长T1长T2信号,在DWI序列上均表现不同程度的高信号,10例增强扫描后实性部分中度至明显不均匀强化,时间-信号强度曲线6例呈平台型,4例呈持续上升型.结论 ESS的MRI表现具有一定的特征性,DWI及动态增强检查有助于本病的诊断及鉴别诊断.

The MRI features of endometrial stromal sarcoma

Objective To analyze the MRI features of endometrial stromal sarcoma(ESS)and to explore its value in clinical application. Methods Thirteen patients with histologically proven ESS were collected.All cases underwent non-contrast MRI scan and DWI,10 of which underwent contrast-enhanced MRI scan.The MRI features were discussed in combination with the pathological results after operation.Results In all lesions,6 lesions were located in endometrial cavity,4 in myometrium,1 in right wall of uterus and broad ligament,1 in cervical canals,and 1 in the top segment of vagina and pelvic.Plain MRI showed the lesions with hypointensity on T 1 WI and mixed hyperintensity on T 2 WI,which exhibited polypoid or multiple nodular masses.DWI showed the lesions with different hyperintensity.In 10 patients with post-enhanced scanning,moderate or marked heterogeneous enhancement of the masses were demonstrated,in which 6 presented plateau pattern of time-signal enhanced curve and 4 were persistent pattern.Conclusion ESS had some characteristic features on MRI,and DWI and dynamic contrast-enhanced examination can help to improve the diagnosis and differential diagnosis.