卵巢卵泡膜细胞瘤的MRI表现  

MRI manifestations of ovarian thecoma

作　　者：郑金枝 刘岘 刘波[2] 王智圆 

机构地区：[1]广州中医药大学第二附属医院放射科,广州510120 [2]广东省中医院放射科,广州510120

出　　处：《放射学实践》2014年第6期684-686,共3页Radiologic Practice

摘　　要：目的:分析卵巢卵泡膜细胞瘤(OT)的MRI表现,以提高对该病的认识和诊断水平。方法:回顾性分析20例经手术病理证实的OT的MRI和病理学特征。结果:MRI表现为20例OT T1WI呈等、低信号,T2WI多呈等、低信号,2例病灶内见点、线状出血高信号,14例病灶内见囊变、坏死不均匀高信号;T1WI增强扫描示早期病灶实性部分轻度强化,延迟期强化程度增加。病理结果:14例病灶见囊变、坏死区;4例病灶内有灶性出血;6例肿瘤细胞之间胶原纤维少,瘤细胞比例相对较高;14例肿瘤细胞之间胶原纤维较多,瘤细胞比例相对较低。结论:MRI可清晰显示OT的大小、形态、边界、信号特点,能够较准确的反映OT相对应的病理学特征,因此MRI对该肿瘤的诊断与鉴别诊断具有重要价值。Objective：To analyze the magnetic resonance imaging （MRI）findings of ovarian thecoma （OT）aiming to improve the knowledge and imaging diagnostic proficiency of OT.Methods：A series of 20 cases of histopathologically proved OT were retrospectively reviewed for their MRI and pathological characteristics.Results：All 20 cases of OT showed iso- or hypo-intensity on T1 WI and iso-,or hypo- and/or hyper-intensity on T2 WI.14 of them also showed cystic degeneration or necrosis inside tumor tissues;two cases had dotted or linear hemorrhage.All 20 cases were mildly enhanced on early scans after Gd-DTPA injection,but much intensive on delayed scans.Pathological findings：14 cases had cystic or necrotic lesions. Four cases had hemorrhage.There were less collagen fibers among the tumor cells with higher ratio of tumor cells in 6 cases;on the contrary,there were more collagen fibers with lower ratio of tumor cells in 14 cases.Conclusion：MRI can clearly show the size,shape,boundaries and signal features of OT,and can also accurately reveal the pathological structures corre-spondingly.Thus,MRI is of important value in the diagnosis and differential diagnosis of OT.

关 键 词：卵巢肿瘤 磁共振成像 病理学 

分 类 号：R445.2[医药卫生—影像医学与核医学] R737.31[医药卫生—诊断学]