卵泡膜细胞瘤和细胞性纤维瘤的MRI诊断价值

THE VALUE OF MRI DIAGNOSIS OF THECOMA AND CELLULAR FIBROMA

目的:探讨卵巢卵泡膜细胞瘤和细胞性纤维瘤的磁共振成像(magnetic resonance imaging,MRI)诊断价值。方法:回顾性分析16例女性病人经手术病理证实的17个卵巢卵泡膜细胞瘤或细胞性纤维瘤的MRI表现和相关临床、病理表现。结果:大多数病人(76.5%)是绝经后妇女。58.8%的病人表现为血清CA-125升高。MRI可揭示如下特点:(1)肿瘤大部较大,约123.7±46mm,47.0%为囊实性,43.7%为类圆形。(2)T2WI大部分肿块表现为混杂信号占56.3%;T1WI大部分表现为低信号占43.8%;DWI表现为不均匀高信号占31.3%;增强扫描大部分表现为无强化和明显不均匀强化,分别占43.8%和25.0%。肿瘤之外,未发现子宫增大或内膜异常增厚。结论:MRI在卵泡膜细胞瘤或细胞性纤维瘤的诊断和鉴别诊断中有较大价值。

Objective： To study MRI diagnosis of ovarian thecoma and cellular fibroma. Methods：MRI appearances of 17 ovarian thecoma or cellular fibroma 16 female patients confirmed by surgical pathology were retrospectively reviewed and correlated with clinical and histological findings. Results：Most patients were post-menopausal females 76.5% of cases. 58.8% of patients showed an elevated serum carbohydrate antigen 125（ CA-125） level. On MRI,distinct features were revealed as following：（ 1） The tumors were larger,about 123.7±46 mm,47.0%were cystic,43.7%were oval.（ 2） Majority of the mass（ about 56.3%） showed mixed intensity on T2 WI; Most of the mass（ accounted for 43.8%）showed low intensity on T1 WI; DWI showed heterogeneous high intensity（ accounted for 31.3%）; Majority of the mass showed non-enhanced and significantly heterogeneous enhancement on enhancement scan,Accounting for 43.8%and 25.0%respectively.Outside of the tumor,no uterine enlargement or intimal thickening was found.Conclusion： MRI has the superiority to show the distinct appearances of thecoma or cellular fibroma.