卵巢成熟性畸胎瘤恶变的影像学表现分析  

Imaging analysis of malignant transformation of ovarian mature teratoma

作　　者：平小夏[1] 刘原庆 姜楠[1] 胡春洪[1] PING Xiaoxia;LIU Yuanqing;JIANG Nan;HU Chunhong(Department of Radiology,the First Affiliated Hospital of Soochow University,Suzhou,Jiangsu Province 215006,China)

机构地区：[1]苏州大学附属第一医院放射科,江苏苏州215006

出　　处：《实用放射学杂志》2024年第4期606-608,645,共4页Journal of Practical Radiology

摘　　要：目的分析卵巢成熟性畸胎瘤恶变的影像学表现。方法回顾性分析4例经手术病理证实的卵巢成熟性畸胎瘤恶变的临床资料及CT、MRI影像学表现,分析内容包括病灶大小、形态、质地、强化程度及方式等。结果4例中,病灶位于左侧卵巢3例,右侧卵巢1例。病灶最小87 mm×80 mm×87 mm,最大171 mm×141 mm×215 mm。影像上均表现为类圆形或卵圆形囊性为主肿块,内部可见脂-液平面,并可见漂浮的混杂密度或信号团块影(2/4),囊壁局限性增厚(2/4)和/或跨越囊壁生长的软组织肿块(3/4),增强扫描明显不均匀强化(2/3)。结论卵巢成熟性畸胎瘤恶变常表现为伴有脂-液平面的囊性为主肿块,囊壁可见局限性增厚或软组织肿块形成,增强后明显强化,结合临床信息(如年龄较大,合并肿瘤指标升高),可提示成熟性畸胎瘤恶变的诊断。Objective To analyze the imaging manifestations of malignant transformation of ovarian mature teratoma.Methods The clinical data and CT and MRI imaging findings of four patients confirmed as malignant transformation of ovarian mature teratoma by operation and pathology were analyzed retrospectively.The following imaging features were assessed:size,shape,texture,enhancement degree and pattern,et al.Results Among the four cases,three lesions were located in the left ovary and one in the right ovary.The minimum size and maximum size were 87 mm×80 mm×87 mm and 171 mm×141 mm×215 mm,respectively.All of the lesions showed as round-like or ovoid cystic masses with fat-fluid level(4/4),and floating mixed density or signal masses(2/4).The demonstrated local thickening of the cyst wall(2/4)and/or soft mass growing across the wall(3/4),with significant inhomogeneous enhancement(2/3).Conclusion The malignant transformation of ovarian mature teratoma often presents as a cystic mass with fat-fluid level,and local thickening or soft mass of the cyst wall,with significant enhancement.It should be considered in the elderly patients with abnormal tumor markers and above imaging features.

关 键 词：卵巢肿瘤 成熟性畸胎瘤 恶变 计算机体层成像 磁共振成像 

分 类 号：R737.31[医药卫生—肿瘤] R814.42[医药卫生—临床医学] R445.2