目的：探讨盆腔内孤立性纤维瘤的MRI表现特征。方法：结合文献复习，回顾性分析经手术病理证实的5例盆腔内孤立性纤维瘤的MRI表现。结果：5例患者共6个病灶，1例为多发。MRI示肿瘤呈类圆形4个、不规则形2个。肿瘤边界均清晰，T1WI呈等或略低于肌肉信号；T2WI多呈混杂高信号；1例肿瘤内部及边缘可见血管流空信号；增强扫描呈不均匀明显强化3例、不均匀轻中度强化1例，1例未行增强检查。结论：MRI表现为单发实性肿块，边界清楚，内部呈多结节样结构的混杂信号，增强扫描呈不均匀明显强化，应考虑到盆腔孤立性纤维瘤的可能。
Abstract
Objective: To analyze the MRI findings of solitary fibrous tumor in pelvis. Methods: The MRI features of 5 cases of solitary fibrous tumor in pelvis proved by surgery and pathology were investigated retrospectively. Image characteristics were analyzed. Results: There were 6 lesions in the 5 cases with two lesions in one case. The shape of tumors showed round-like(n=4) and irregular(n=2). ALL lesions were found as well-defined masses. They were mostly hypointense and isotense to the muscle on T1 weighted images and heterogeneous and hyperintense on T2 weighted images. Intra-tumoral flow voids was seen(n=1). After gadolinium administration, the tumors were strongly heterogeneous enhancement(n=3) and mildly heterogeneous enhancement(n=1), one of which was free of contrast enhancement. Conclusion: MRI findings of solitary fibrous tumor in pelvis have some features, preferring to single solitary lesion. MR signals within the tumors were mixed with multiple tubercles, and strongly heterogeneous enhancement after contrast injection. All the findings could suggest the diagnosis of this disease.
关键词
盆腔肿瘤 /
纤维瘤 /
磁共振成像
Key words
Pelvic neoplasms /
Fibroma /
Magnetic resonance imaging
中图分类号：
Ｒ735
Ｒ730.262
Ｒ445.2
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