目的 分析子宫内膜间质肉瘤的MRI特点，提高该病的诊断水平。方法 回顾性分析我院经手术病理证实的子宫内膜 间质肉瘤8例，讨论其MRI表现。结果 宫腔内息肉生长型2例，其中1例穿透子宫壁全层种植于腹盆腔肠管表面；肌 层肿块型1例；肌层浸润型3例；盆腔肿块型2例、均为肌瘤术后病例，其中1例伴子宫肌层结节。实性肿瘤7例、2例 伴坏死，囊实性肿瘤1例。肿瘤的实性成分在MRI的T1WI多呈等信号，T2WI多呈稍高信号，DWI信号明显增高，增强 扫描强化明显。结论 子宫内膜间质肉瘤MR表现可分为四种类型：息肉生长型、肌层肿块型、肌层浸润生长型、盆 腔肿块型；大多为实性肿块。当看到MR上有上述表现，特别是有浸润性生长表现，同时实性成分于DWI上信号明显 增高、增强扫描明显强化的病例，应考虑子宫内膜间质肉瘤的可能。

Objective To summarize the magnetic resonance imaging (MRI) features of endometrial stromal sarcomas and improve the diagnosis. Methods MRI findings of 8 cases of my hospital proved by pathology, discuss the imaging (MRI) findings. Results 2 cases were polypoid mass, 1 of these penetrated the wall of uterus and planted the surface of intestines in abdominal and pelvic cavity, 1 case was intramural mass;3cases was diffuse myometrial; 2 cases were huge pelvic mass,which both had a history of leiomyoma of uterus incision,1 of these with mural nodules .7 cases solid mass,2 of 5 with necrosis;1 case solid-cystic mass.On MRI images, the signal intensity of the solid component of mass was often iso-intense on T1-weighted images(T1WI) and little yperintensity on T2-weighted images (T2WI)and much hyperintensity on diffuse images (DWI),which enhanced obviously after the administration of the contrast medium. Conclusion The magnetic resonance imaging (MRI) findings of endometrial stromal sarcoma present 4 pattererns: polypoid mass in ,intramural mass,diffuse myometrial,huge pelvic mass. Most of endometrial stromal sarcomas are solidmass.When finding the imaging of above-menttioned,expecially with infiltrated developing, and the the solid components on diffuse images were much hyperintensity and enhanced obviously, may sugest thediagnosis of uterine endometrial stromal sarcoma.