卵巢硬化性间质瘤的MRI诊断

The MRI Diagnosis of Ovarian Sclerosing Stromal Tumor

目的探讨卵巢硬化性间质瘤的MRI信号表现及强化特征,提高对本病的认识。方法回顾性分析经手术病理证实的卵巢硬化性间质瘤5例,总结其临床特点、病变形态、MRI信号表现和强化特征。结果5例卵巢硬化性间质瘤均为单侧,右侧3例,左侧2例。5例均为囊实混杂成分,实性成分为主。MRI增强扫描动脉期边缘呈乳头状或梳状明显强化,自边缘向中心扩散,延迟时相病变持续强化,强化范围扩大,总体上呈"快进慢出"的强化特征。结论卵巢硬化性间质瘤MRI强化形式颇具特征性,结合临床相关资料,可提高对此病的正确诊断率。

Objective To investigate the MRI signal performance and the enhancement feature of the ovarian sclerosing stromal tumor（OSST）, to enhance the understanding of that disease. Methods A retrospective analysis of 5 cases of OSST which have been confirmed through surgery and pathology, summarization of its clinical characteristics, lesion morphology, MRI signal performance and the feature of its enhancement. Resu/ts Five cases of OSST are all unilateral with three right-sided cases and two left- sided cases. The five cases all have cystic and solid mixed composition, the solid component is mostly.MRI enhancement scanning show the edge of tumor has obviously enhancement with the shape of papilla or comb at arterial phase , and the enchancement diffusion from the edge to the center, delayed phase lesion has continuous enchancement whose range is expand with feature of ＂Rapid Entry and Delayed Exit＂ on the whole. Conclusion The MRI enhancement pattern of the OSST has considerable characteristic which can enhance the rate of a correct diagnosis of that disease when combined with relevant clinical information.