卵泡膜细胞瘤的超声表现和病理对照研究

目的 探讨卵泡膜细胞瘤的超声声像图特征,并分析其病理学基础.方法 回顾性分析45例卵泡膜细胞瘤的超声表现,按肿瘤内部及后方回声的不同,分为实性后方回声衰减型、实性低回声型及囊实性回声型.卵泡膜细胞瘤组织病理学表现按肿瘤细胞的组成,分为卵泡膜细胞为主型、成纤维细胞为主型及混合型,并记录玻璃样变性及黄素化情况,比较各超声类型的组织病理学差异.结果 45例卵泡膜细胞瘤中,有34例(75.6%)为实性肿瘤,其中后方回声衰减型15例,即肿瘤前部呈低回声或强回声弧形带,后方伴回声衰减;实性低回声型19例,即肿瘤内部呈较均匀低回声,无后方回声衰减.另11例(24.4%)呈囊实混合性肿瘤,即囊实性回声型.各超声类型患者的病理学细胞组成差异无统计学意义(P>0.05),5例合并玻璃样变性和1例黄素化肿瘤后方伴回声衰减,囊实性回声型肿瘤病理可见不同程度的囊性变及出血.结论 实性卵泡膜细胞瘤具有特征性表现,超声表现的差异性可能与肿瘤变性有关,而与肿瘤细胞的组成无关.

Comparision of sonographic findings and pathological features in ovarian thecoma

Objective To compare the sonographic findings with pathological features of ovarian thecoma, and to analyze the relationship between them. Methods The sonograms of 45 ovarian thecoma cases were reviewed retrospectively and categorized into three subtypes as sound attenuation pattern, homogeneous hypoechoic pattern and solid and cystic mixed pattern. The pathological findings were classified as theca cell-predominant, fibroblast-predominant and mixed thecoma according to the cellular composition of the tumors. Hyaline degeneration and luteinization of the tumors were recorded. The pathologic findings of each subtype based on sonography were compared. Results Of the 45 patients, there were 34 (75.6%) solid ovarian lesions, 15(33.3%) of those showed a sound-attenuation pattern with an anterior hypoechoic zone and posterior acoustic attenuation in sonography, the other 19(42.2%) cases had homogeneous hypoechoic pattern with no posterior acoustic attenuation, and the remaining 11(24.4%) cases presented as a solid and cystic mixed pattern. There were no significant differences in pathological cellular composition among the three sonographic subtypes. Five solid tumors containing hyaline degeneration and one with luteinization were found to have posterior acoustic attenuation. The solid and cystic mixed thecomas showed cystic degeneration and hemorrhage. Conclusion Solid ovarian thecomas usually have typical sonographic features, which may be associated with degeneration but not with cellular composition within the tumor.