卵巢甲状腺肿：磁共振成像表现
Struma ovarii: MR appearances.
作者信息
Yamashita Y, Hatanaka Y, Takahashi M, Miyazaki K, Okamura H
机构信息
Department of Radiology, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto 860, Japan.
出版信息
Abdom Imaging. 1997 Jan-Feb;22(1):100-2. doi: 10.1007/s002619900150.
BACKGROUND
Analysis of unenhanced and contrast-enhanced magnetic resonance (MR) images of struma ovarii, a rare benign neoplasm of the ovary, is the aim of this study.
METHODS
T2-weighted and Gd-DTPA-enhanced T1-weighted MR images of five histologically proven struma ovarii were evaluated retrospectively.
RESULTS
In all patients, unenhanced and contrast-enhanced T1-weighted MR images showed complex cystic masses composed of multiple cysts and a solid component, indicating the presence of large and small thyroid follicles. In four patients, the cyst fluid was hypointense on T1-weighted images and hyperintense on T2-weighted images. In one patient, the fluid was hyperintense on T1-weighted images and hypointense on T2-weighted images due to hemorrhage.
CONCLUSION
A complex mass composed of multiple cysts and a solid component, indicating the presence of large and small thyroid follicles, appeared to be a characteristic MR finding of struma ovarii.
背景
本研究旨在分析卵巢甲状腺肿（一种罕见的卵巢良性肿瘤）的平扫及增强磁共振（MR）图像。
方法
回顾性评估5例经组织学证实的卵巢甲状腺肿的T2加权及钆喷酸葡胺增强T1加权MR图像。
结果
所有患者的平扫及增强T1加权MR图像均显示由多个囊肿和一个实性成分组成的复杂囊性肿块，提示存在大小不等的甲状腺滤泡。4例患者的囊液在T1加权图像上呈低信号，在T2加权图像上呈高信号。1例患者因出血，囊液在T1加权图像上呈高信号，在T2加权图像上呈低信号。
结论
由多个囊肿和一个实性成分组成、提示存在大小不等甲状腺滤泡的复杂肿块似乎是卵巢甲状腺肿的特征性MR表现。
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