目的 分析老年少见巨大卵巢良 性肿瘤的MRI表现，提高诊断水平。方法 回顾性分析经手术及病理学证实的27例老 年少见巨大卵巢良性肿瘤的MRI资料，并 复习相关文献。结果 27例病例年龄均大 于65岁，绝经时间15-26年。共发现28个 肿瘤，其中卵泡膜细胞瘤11个，卵巢纤维 瘤8个，卵泡膜纤维瘤7个，硬化性间质瘤 及Brenner瘤各1个。肿瘤最大直径约11- 25cm，边界均较清楚，周边结构未见明显 侵犯。不同类别肿瘤的MRI信号和强化特 点各不相同。结论 MRI可以一定程度显示 老年少见巨大卵巢良性肿瘤的病理学改 变，对其诊断及鉴别具有重要价值。

Objective To analyze the MRI representations of rare and giant ovarian benign tumors in elderly women and improve the diagnostic level. Methods A total of 27 cases of rare and giant ovarian benign tumors in elderly women which proved by surgery and pathology were retrospectively analyzed, and the corresponding literatures were reviewed. Results All 27 cases were over 65 years of age and the menopause time was 15-26 years. There were 28 tumors in 27 cases, containing 11 cases of theca cell tumor, 8 cases of ovarian fibromaes and 7 cases of thecoma-fibromaes, 1 cases sclerosing stromal tumor and 1 cases of Brenner tumor respectively. The boundary of all tumors were clear, the maximum diameter of all tumors was 11-25cm and there was no obvious invasion of the surrounding structure. The MRI signal and enhanced characteristics of different types of tumor were diverse. Conclusion MRI can show certain pathological changes of rare and giant ovarian benign tumors in elderly women and show important value for its diagnosis and differential diagnosis.