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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 T_1WI 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T_2WI 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 T_1WI 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 T_2WI 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。
Objective To investigate the clinical features and MRI features of mucinous liposarcoma in extremities. Methods The clinical and MRI data of 7 cases of myxomatous liposarcoma confirmed by pathology were retrospectively analyzed. Patients aged 41 to 59 years old, the median age of 51 years. Results Three tumors occurred in the thigh, two in the lower leg, one in the foot and one in the shoulder; six were deep and one was superficial. Compared with the muscle lesions in the T_1WI were mainly equal or slightly lower signal, 6 cases can be seen “line ” shape, “lace ” shape or “cloud ” like high signal; T_2WI lesions and fatty phase Which was higher than that in most of the areas. The contrast-enhanced scanning lesions showed inhomogeneous enhancement. The lesions were clearly visible inside, with clear edges and no obvious edema around them. Conclusions MRI findings of mucinous liposarcoma in limbs have some characteristics. The T_1WI mainly shows the signal of equal or slightly lower than that of muscle, and the “line”, “lace” or “cloud” Flocculent "high signal, the T_2WI is higher than the fat signal-based, enhanced scanning was significantly enhanced non-uniform.