MRI联合CT对卵巢性索间质肿瘤的诊断价值

目的 探讨MRI联合CT对卵巢性索间质肿瘤(OSCST)的诊断价值.方法 收集手术病理证实的OSCST 29例,回顾性分析CT和MRI影像特征.结果 纤维卵泡膜细胞瘤19例,均为单发界清、类圆形肿块,实性12例(63.1％),囊实性7例(36.9％),CT显示钙化2例,T1WI呈等信号,T2 WI呈低或稍高信号,轻度强化.颗粒细胞瘤9例,均为单发囊实性肿块,壁厚,无壁结节,轻度强化.支持间质细胞瘤1例,单发实性肿块,T1WI呈稍高信号,T2 WI呈较高信号,明显强化.结论 OSCST的CT及MRI表现有一定的特征性,二者结合有助于提高诊断准确性.

Application of MRI combined with CT on diagnosing ovarian sex cord stromal tumor

Objective To assess the value of MRI combined with CT in the diagnosis of ovarian sex cord stromal tumor (OSCST).Methods The CT and MRI features of 29 cases with OSCST confirmed by pathology were analyzed retrospectively.Results Fibrothecoma in 19 cases showed a solitary round mass with a regular border,solid in 12 cases (63.1％) and cystic-solid in 7 cases (36.9％),calcification in 2 cases,isointense on T1WI and hypointense or slight hyperintense on T2WI with slight enhancement.Granule cell tumor in 9 cases showed a solitary cystic solid mass with thick wall,without nodules on cystic wall,and slight enhancement in the solid parts.Sertoli-leydig cell tumor in 1 case showed a solid mass,slightly hyperintense on T1WI,hyperintense on T2 WI,and obvious enhancement.Conclusion CT and MRI manifestations of OSCST demonstrate some characteristics.Combination with MRI and CT can improve the accuracy of the diagnosis.