【作者】 杨梅；

【导师】 郭顺林；

【作者基本信息】 兰州大学 ， 影像医学与核医学（专业学位）， 2014， 硕士

【摘要】 目的卵巢卵泡膜细胞瘤(OT)较少见,现探讨卵巢卵泡膜细胞瘤的MRI表现及病理特征。方法分析经病理证实的30例OT患者的MRI表现,并与其病理结果进行对照,分析病灶大小、囊实性与腹水的相关性。结果MRI平扫病灶实体T1WI均呈等低信号,T2WI呈低信号为主夹杂少量高信号21例,高信号为主2例,增强后早期病灶实性部分多呈轻度强化,延迟后强化程度略增加。20例MRI发现不同程度的腹盆腔积液,2例伴胸腔积液。病理示病灶囊性变和MRI表现的囊变信号灶数目、形态基本一致,腹水程度和病灶大小无相关性(r=0.29,p＞0.05),肿瘤囊实性变与腹水程度相关性亦无统计学意义(r=0.25,P＞0.05),病灶MRI囊实性改变与病理学细胞组成差异无统计学意义(x2=0.67,P＞0.05)。结论卵泡膜细胞瘤T2WI低信号的特征及增强模式一定程度上可反映其病理特征,对诊断有一定的特异性,有助于该肿瘤的诊断与鉴别诊断。更多还原

【Abstract】 Objective Ovarian thecoma is uncommon in clinical practice, the pathological examination after operation can make a definite diagnosis, To investigate the MRI and pathologic features of ovarian thecoma.Methods MRI findings of30patients with surgically and pathologically proved ovarian thecoma were retrospectively analyzed and compared with pathologic finding. Correlation analysis between tumor size, solid cystic and amount of ascites was made.Result Ovarian thecoma displayed.iso-or hypointense signal on T1WI and9cases appeared as most isointensity mixed with little hyperintensity on T2WI. Two cases appeared as hyperintensity on T2WI; After enhancement, most lesions showed mild early enhancement with slight increase on the delayed phase.20cases associated with a large quantity of ascites and2cases associated with pleural effusion on MRI. Pathological necrosis and cystic degeneration were seen in30cases which corresponded to the number and shape of the cystic lesions on MRI. The amounts of ascites was not significantly correlated with the lesion size(r=0.29,P>0.05), tumor cystic degeneration showed correlation with degree of ascites neither(r=0.25, P=>0.05). There were no significant differences in pathological cellular composition among the three MRI subtypes (x2=0.67,P>0.05).Conclusion Hypointensity on T2WI and mild enhancement pattern supply are the characteristics of ovarian thecoma. The MRI finding can reflect the pathologic features of the tumor, which is helpful in the diagnosis and differential diagnosis.更多还原