四肢腺泡状软组织肉瘤的MRI表现特征分析

MRI findings of alveolar soft tissue sarcoma(report of 10 cases)

目的探讨四肢腺泡状软组织肉瘤(ASPS)的MRI表现特征。方法搜集10例确诊为四肢腺泡状软组织肉瘤患者的临床资料,对其MRI表现进行分析。结果 9例患者的肿瘤部位位于深部肌群,1例位于浅肌群。其中6例患者肿瘤呈现分叶状,4例边缘光滑,T1WI呈等或稍高信号,T2WI呈不均匀高信号,增强扫描后肿瘤实质中等或明显强化,坏死区无强化,周围为延迟强化的迂曲血管影。结论 MRI是准确诊断软组织肿瘤的最佳方法,对病理分型有较高临床价值。

Objective To analyze the MRI findings of alveolar soft sarcoma of the extremities.Methods The clinical data and MRI findings of 10 patients with alveolar soft tissue sarcoma of the extremities were analyzed. Results There were 9 cases in deep muscle group and 1 case in superficial muscle group. 6 cases were lobulated and 4 cases were smooth. T1WI shown equal or slightly higher signal and T2WI shown uneven high signal. Tumor parenchyma was moderately or markedly enhanced and delay strengthening of circuitous vessels image after enhancement scanning. Conclusion MRI findings is the good method for the accurate diagnosis of solft tissue tumors and for valuable for pathological subtypes.