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000020子宫恶性中胚叶混合瘤(癌肉瘤) > 扩张的子宫内膜腔中的大的息肉样肿块 > T1和T2加权图像上的不均匀信号表现 > 肿瘤内出血和坏死 > 由于明显的血管和淋巴侵入,UES倾向于以比ESS更具破坏性和更广泛的肌层入侵 > 与正常子宫肌层相比,不均匀强化 > 在UES中比在ESS中更常见的是溃疡出现,不规则边缘的存在,多发性边缘肿瘤结节,子宫内膜样蠕虫样扩展和多发结节性肿块形成 与子宫内膜癌的鉴别 子宫内膜癌:来源于子宫内膜,向腔内生长0000001100064辅助报名000000330000000100000第四部分MRI表现特征:子宫内膜间质肉瘤 > Appears as polypoidendometrial mass息肉状肿块形成 > With low signal on Tl-weighted images and heterogeneously increased high T2 signal.T1-weighted images低,T2不均匀高信号 > Shows myometrial involvement,either sharply demarcatedor in a more diffuse and destructive manner肌层侵犯,边界可以清楚或不清 > These tumors have a tendency for lymphatic and vascularinvasion.淋巴或血管侵犯 > After contrast administration,enhancement is moderate and commonly heterogeneous不均匀中等强化 来源04