目的研究卵巢良恶性肿瘤的MRI特征及鉴别诊断。方法选取我院2013年6月至2015年12月收治的卵巢肿瘤患者50例为研究对象,对其MRI表现进行回顾性分析,研究其MRI特征及鉴别诊断结果。结果除了1例卵巢纤维瘤被误诊为子宫浆膜下肌瘤,1例黏液性囊腺瘤被误诊为囊腺癌之外,其它均诊断正确,确诊率为96%;良恶性肿瘤在病灶分布、强化特征、成分、境界、形态等方面的差异存在统计学意义。结论卵巢良恶性肿瘤的MRI表现各有差异,对鉴别诊断与定性鉴别诊断具有良好的价值。 Objective To study the MRI features and differential diagnosis of benign and malignant ovarian tumors. Methods Fifty patients with ovarian tumors who were admitted to our hospital from June 2013 to December 2015 were selected as the research object. Their MRI findings were retrospectively analyzed, and their MRI features and differential diagnosis results were studied. Results In addition to a case of ovarian fibroma was misdiagnosed as uterine fibroids, 1 case of mucinous cystadenoma was misdiagnosed as cystadenocarcinoma, the other were diagnosed correctly, the diagnosis rate was 96%; benign and malignant tumor distribution in the lesion There were significant differences in characteristics, composition, state, morphology and so on. Conclusion The MRI findings of benign and malignant ovarian tumors are different, which has good value in differential diagnosis and differential diagnosis.