【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，T₁WI表现为低信号11例、等信号12例，其中10例T₁WI可见高信号，T₂WI均表现为不均匀稍高信号，7例T₂WI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^-3mm²/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。更多还原

【Abstract】 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.T₁WI showed low signal in 11 cases and iso-intense signal in 12 cases, with 10 cases showing high signal on T₁WI.T₂WI shows uniformly slightly high signal intensity, and in 7 cases, there were flow voids within the lesions on T₂WI.DWI showed high signal intensity in all cases.ADC value of the solid component was（0.95±0.16） ×10^-3mm²/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.更多还原