四肢软组织血管瘤的MRI诊断

MRI Diagnosis of Soft-Tissue Hemangiomas

目的 总结软组织血管瘤的MRI表现。方法 回顾性分析 17例软组织血管瘤的MRI表现和病理联系。结果 17例血管瘤在T1WI上呈略高 (12 / 17)或等 (5 / 12 )于肌肉组织信号 ,在T2WI上都呈显著高信号 ,其中夹杂不均匀信号病理上代表了脂肪 ,纤维组织 ,平滑肌 ,血栓形成和钙化。 1例海绵状血管瘤MRI显示优于DSA。结论 MRI可显示血管瘤的脉管及血管成分间的多种非血管组织 ,能对大多数的血管瘤作出定性诊断。

Objective To evaluate MRI findings of soft tissue hemangiomas. Methods We retrospectively analyzed MRI appearances and pathological findings of seventeen patients with soft tissue hemangiomas. Results Twelve of the 17 hemangiomas showed high to intermediate signal intensities on T1WI with respect to skeletal muscle, and five of the 17 hemangiomas displayed equal signal intensities. All seventeen of the hemangiomas showed markedly increased signal on T2WI. Focal inhomogeneities of the lesions in pathological study represented areas of fat, fibrosis, smooth muscle, thrombosis or calcification. The display of one cavernous hemangioma on MRI was superior to DSA. Conclusion MRI can display the characteristic vascular and fibrofatty structures inside the lesion, based on which qualitative diagnosis for most hemangiomas can be made.