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目的 评价四肢软组织肿瘤影像学检查的意义。方法 总结6例手术病理证实的软组织肿瘤,分析其CT和MRI表现特点。结果 软组织肿瘤CT共同表现是低密度肿块,MRI表现各异,4例病变一端或两端显示“尾征”,2例恶性肿瘤内T2权重像出现高于脂肪的信号区。结论 四肢软组织肿瘤应首选MRI检查,“尾征”是肌间隙肿瘤较有意义的定位征象,T2权重像肿瘤内出现高于脂肪的信号区是恶性肿瘤的一个重要表现。
Objective To evaluate the significance of imaging examination of limb soft tissue tumors. Methods Six cases of soft tissue tumors confirmed by pathology were analyzed and their CT and MRI features were analyzed. Results The common manifestations of soft tissue tumors were low-density tumors with different MRI features. Four lesions showed “tail signs” at one or both ends. T2 weight images in two malignant tumors appeared higher than the fat signal area. Conclusion MRI should be the first choice for soft tissue tumors of the extremities. “Tail sign” is a more significant localization sign of muscle space tumors. T2 weights are more important than malignant fat signal areas in tumors.