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MRI diagnosis of myxoid liposarcoma of extremities
Author(s): 
Pages: 66-68
Year: Issue:  1
Journal: CHINESE JOURNAL OF RADIOLOGY

Keyword:  脂肪肉瘤黏液样四肢磁共振成像;
Abstract: 目的 探讨四肢黏液样脂肪肉瘤的临床和MRI特点.方法 对7例经病理证实的四肢黏液样脂肪肉瘤的临床和MRI资料进行了回顾性分析.患者年龄41~59岁,中位年龄51岁.结果 3例肿瘤发生在大腿,2例在小腿,1例在足部,1例在肩部;6例位置深在,1例位置表浅.与肌肉相比病变在T1WI上主要呈等或稍低信号,6例可见"线"状、"花边"状或"云絮"状高信号;在T2WI上病变与脂肪相比大部分区域呈高信号;增强扫描病变均呈不均匀的显著强化;病变内部可见分隔,边缘清楚,周围无明显水肿,均未侵犯邻近骨骼.结论 四肢黏液样脂肪肉瘤MRI表现有一定特点,在T1WI上主要呈等或稍低于肌肉的信号,并可见脂肪成分所致的"线"状、"花边"状或"云絮"状高信号,在T2WI上则以高于脂肪的信号为主,增强扫描呈不均匀的显著强化.
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