子宫癌肉瘤MRI表现  

MRI Manifestations of Uterine Carcinosarcomas

作　　者：刘晓怡[1] 任伶萍 王珂 苟心怡 王屹[1] 洪楠[1] 程瑾[1] LIU Xiaoyi;REN Lingping;WANG Ke(Department of Radiology,Peking University People's Hospital,Beijing 100044,P.R.China)

机构地区：[1]北京大学人民医院放射科,100044

出　　处：《临床放射学杂志》2024年第10期1750-1754,共5页Journal of Clinical Radiology

摘　　要：目的观察子宫癌肉瘤(UCS)的MRI表现。方法回顾性分析23例经手术病理证实的UCS患者,20例接受盆腔MRI增强扫描,3例接受盆腔MRI平扫,观察病灶MRI表现。结果所有患者均表现为宫腔扩张和宫腔内的肿物;MRI表现为带蒂外生型5例,宽基底外生型16例,侵袭型生长2例,T_(1)WI表现为低信号11例、等信号12例,其中10例T_(1)WI可见高信号,T_(2)WI均表现为不均匀稍高信号,7例T_(2)WI病灶内见流空血管信号,扩散加权成像(DWI)均为高信号,实性成分的平均表观扩散系数(ADC)值为(0.95±0.16)×10^(-3)mm^(2)/s,增强扫描6例轻度强化、10例中等强化、4例明显强化。结论UCS MRI可表现为宫腔内体积较大、信号不均的肿物,有时伴有流空血管信号,且强化程度与子宫肌层相当或高于子宫肌层。Objective To observe MRI manifestations of uterine carcinosarcomas(UCS).Methods A retrospective analysis included 23 patients with confirmed UCS by surgical pathology.Twenty patients underwent pelvic enhanced MRI scanning,while 3 patients underwent pelvic plain MRI scanning.MRI manifestations of UCS were analyzed.Results MRI findings in all patients showed uterine cavity dilation and the masses in the uterine cavity.MRI findings include 5 cases of pedunculated exophytic type,16 cases of broad-based exophytic type,and 2 cases of infiltrative growth.T_(1)WI showed low signal in 11 cases and iso-intense signal in 12 cases,with 10 cases showing high signal on T_(1)WI.T_(2)WI shows uniformly slightly high signal intensity,and in 7 cases,there were flow voids within the lesions on T_(2)WI.DWI showed high signal intensity in all cases.ADC value of the solid component was(0.95±0.16)×10^(-3)mm^(2)/s.Contrast-enhanced scans revealed mild enhancement in 6 cases,moderate enhancement in 10 cases,and significant enhancement in 4 cases.Conclusion UCS on MRI can present as a large intracavitary mass with heterogeneous signal intensity.It may sometimes be accompanied by flow voids,and the degree of enhancement is comparable to or higher than that of the uterine myometrium.

关 键 词：子宫肿瘤 癌肉瘤 磁共振成像 

分 类 号：R737.33[医药卫生—肿瘤] R445.2[医药卫生—临床医学]