Fibroma and fibrothecoma of the ovary: MR imaging findings
Fibroma and fibrothecoma of the ovary: MR imaging findings
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DOI：
10.1148/radiology.204.3.9280262
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发表时间：
1997-09-01
期刊：
影响因子：
19.7
通讯作者：
McCarthy, S
中科院分区：
文献类型：
--
作者：
Troiano, RN;Lazzarini, KM;McCarthy, S
目得：材料与方法：回顾性分析11例经病理证实的女性纤维瘤或纤维卵泡膜瘤的MRI图像，分析其形态学和信号强度特征。结果：所有纤维瘤和纤维卵泡膜瘤在T1加权像上均呈均匀低信号。在T2加权像上，两个最小的病灶显示均匀的低信号，其他9个病灶中有8个主要显示低信号。仅在较大病变中观察到水肿，仅在三个最大病变中观察到囊性变性。在T2加权像上，发现病变中低信号强度的百分比与病变大小无关，纤维瘤中低信号强度的百分比与纤维卵泡膜瘤中的低信号强度的百分比无显著差异（P = 0.55）。许多病变表现出不均匀的信号强度;实性成分分布在外周，囊性成分位于中心或偏心。11个病变中有10个可见腹腔内游离液体，与病变大小无明显相关性（r = .52和P = .10）。结论：由于纤维瘤和纤维卵泡膜瘤在T2加权像上主要是低信号，因此在MR图像上显示出相对特异的表现。
PURPOSE: To describe the morphologic and signal intensity characteristics on magnetic resonance (MR) images of fibromas and fibrothecomas.MATERIALS AND METHODS: MR images of 11 female patients with histologically proved fibromas or fibrothecomas were reviewed, and morphologic and signal intensity characteristics of the lesions were analyzed. MR imaging findings were correlated with histologic findings.RESULTS: All fibromas and fibrothecomas showed homogeneous low signal intensity on T1-weighted images. On T2-weighted images, the two smallest lesions showed homogeneous low signal intensity, and eight of the other nine lesions showed predominantly low signal intensity. Edema was noted only in larger lesions, and cystic degeneration was noted only in three of the largest lesions. On T2-weighted images, the percentage of low signal intensity in the lesion was not found to be related to lesion size, and the percentage of low signal intensity in fibromas was not significantly different from that in fibrothecomas (P = .55). Many lesions showed heterogeneous signal intensity; the solid component was distributed peripherally, and the cystic component was located centrally or eccentrically Free intraperitoneal fluid was noted in 10 of 11 lesions and was not significantly correlated with lesion size (r = .52 and P = .10).CONCLUSION: Because of their predominantly low signal intensity on T2-weighted images, fibromas and fibrothecomas display a relatively specific appearance on MR images.