卵泡膜细胞瘤的MRI表现及文献复习

MRI manifestations of ovarian thecoma and literature review

目的探讨卵泡膜细胞瘤的MRI特征,提高卵泡膜细胞瘤的诊断准确率。方法回顾性分析南通市妇幼保健院及南通大学第二附属医院2012年3月至2015年11月期间6例卵泡膜细胞瘤患者的核磁共振检查影像,结合文献总结卵泡膜细胞瘤的MRI的影像特征。结果卵泡膜细胞瘤体边缘光整、境界清晰。MR平扫肿块大小、形态不一,以实性成分为主,部分肿瘤可见囊变区。T1WI上呈低信号,T2WI脂肪抑制序列以低信号为主,部分可见片絮状高信号,当存在多发囊变时,囊变区T2WI可表现为高信号,部分病灶可见纤维分隔。增强扫描肿瘤实性成分呈轻度强化。结论卵泡膜细胞瘤MRI表现有一定的特征性,结合临床相关病史,可提高该病的诊断准确率。

Objective To investigate the features of magnetic resonance imaging （MRI） of ovarian thecomaand improve the diagnostic accuracy of the ovarian thecoma. Methods The MRI images of six patients with ovarianthecoma confirmed by histopathology and admitted to Maternal and Child Health Hospital of Nantong University andSecond Affiliated Hospital of Nantong University from March 2012 to November 2015, were retrospectively analyzed.The MRI imaging features of ovarian thecoma were summarized according to published research. Results The marginof the ovarian thecoma was smooth and the boundary was clear. The tumors were varied in size and form and mainlycomposed of solid. The cystic area can be found in some lumps. T2WI fat-suppressed sequence was predominantly hy-pointensity signal, and partly showed flaky hyperintensity signal. Hyperintensity occurred when cystic degeneration ofthe lesions existed, and the fiber separation can be found in some lesions. After enhancement, the solid components ofthe tumor showed mild early enhancement. Conclusion The manifestations of MRI of ovarian thecoma have certaincharacteristics, which, combined with clinical history, can improve the accuracy of the diagnosis of the disease.