卵巢常见性索间质肿瘤的影像学表现与病理对照分析

Comparative Analysis of Imaging Features of Common Ovarian Sex Cord Stromal Tumors with Pathologic Findings

目的总结卵巢常见性索间质肿瘤(OSCST)实性和囊性成分的影像特征。方法收集本院经手术病理证实为OSCST 36例患者的影像学资料,并与病理对照分析。结果颗粒细胞瘤9例(25%),9例(100%)有实性成分,5例(55.6%)有囊性成分;卵泡膜细胞瘤-纤维瘤组肿瘤27例(75%),25例(92.6%)有实性成分,11例(40.7%)有囊性成分。前者的实性成分呈等/稍低密度,MRI呈等T_(1)稍长T_(2)信号,增强明显强化。后者的实性成分呈等/稍低密度,MRI呈等/长T_(1)信号短/长T_(2)信号,增强轻度延迟强化。二者囊性成分均呈低密度,MRI呈长T_(1)长T_(2)信号,增强未见强化;动脉期囊变间分隔内见多发细小血管影。OSCST易合并子宫肌瘤、子宫内膜增厚、盆腔积液(血)等。结论OSCST实性成分呈等/稍低密度,MRI呈等/长T_(1)信号及短/长T_(2)信号,囊变间分隔内见多发细小血管影,结合伴随影像征象,能够对其作出初步诊断。

Objective To summarize the imaging features of the solid and cystic components of common OSCST.Methods The imaging data of 36 patients with OSCST confirmed by surgery and pathology in our hospital were collected,and compared with pathology.Results There were 9 cases(25.0%)of granulosa cell tumors,All(100%)had solid components,and 5 cases(55.6%)had cystic components;There were 27 cases(75.0%)of theca cell tumor-fibroma group,25 cases(92.6%)had solid components,and 11 cases(40.7%)had cystic components.The solid components of the former showed isodensity/slightly hypodensity,MRI showed isointensity on T_(1)-weighted image,hyperintensity on T_(2)-weighted image,and enhanced obviously.The solid components of the latter showed isodensity/slightly hypodensity,MRI showed isointensity or hypointensity on T_(1)-weighted image,hypointensity or hyperintensity on T_(2)-weighted image,and slightly delayed enhanced.Both cystic components were hypodensity,hypointensity on T_(1)-weighted image,hyperintensity on T_(2)-weighted image,and no enhanced was found in the cystic part;Multiple small vascular could be seen in the septum in the arterial phase.OSCST were often combined with hysteromyoma,endometrial thickeness,and pelvic cavity effusion,etc.Conclusion The solid components of OSCST showed isodensity/slightly hypodensity,MRI showed isointensity/hypointensity on T_(1)-weighted image,hypointensity/hyperintensity on T_(2)-weighted image,and slightly delayed enhanced,Multiple small vascular could be seen in the cystic septum,OSCST could be preliminarily diagnosed in combined with accompanying imaging signs.