髓内型脊髓海绵状血管瘤的MRI表现分析

MR Appearances of Cavernous Hemangioma of Intramedullary Spinal Cord

目的探讨髓内型脊髓海绵状血管瘤的MRI表现,以期提高对该病的MRI表现认识。方法回顾性分析经手术病理证实的10例髓内型脊髓海绵状血管瘤的病理学改变与MRI表现特征。结果10例髓内型脊髓海绵状血管瘤均为单发。胸段8例,上颈段及腰段各1例;完全位于脊髓内7例,瘤体部分突出于脊髓外3例。髓内型脊髓海绵状血管瘤呈椭圆形、片状形及小球形。所有髓内病例MRI信号复杂,其中5例呈T_1WI高信号和T_2WI中高信号伴边缘低信号环或中心桑葚样低信号,3例呈T_1WI高信号和T_2WI均匀低信号,1例为均匀等T_1WI、T_2WI信号,1例呈T_1WI等信号、T_2WI均匀低信号;8例呈不均质不同程度强化;2例均质强化。结论髓内血管瘤有MRI表现特征,位于胸段者较多,髓内混杂信号病变伴斑点状出血、周围低信号环且强化不均匀为该病较特征的MRI表现。

Objective To investigate the MRI findings of intramedullary cavernous hemangioma in order to improve the MRI findings of the disease.Methods The pathological changes and MRI features of 10 cases of intramedullary spinal cavernous hemangioma confirmed by operation and pathology were retrospectively analyzed.Results10 cases of intramedullary spinal cavernous hemangioma were single.There were 8 cases in the thoracic segment,1 in the upper cervical segment and 1 in the lumbar segment.There were 7 cases in the spinal cord and 3 cases in the tumor.The intramedullary spinal cavernous hemangioma has an elliptical shape,a flaky shape and a small spherical shape.All intramedullary cases have complex MRI signals,5 of which are T_1WI high signal and T_2WI high signal with surrounding low signal ring or central mulberry-like low signal,3 cases with T_1WI high signal and T_2WI uniform low signal,and 1 case with uniform T_1WI,T_2WI signal,1 case showed T_1WI and other signals,T_2WI evenly low signal;8 cases showed heterogeneity to different degrees of enhancement;2 cases were homogenized.ConclusionIntramedullary hemangioma has MRI features,more in the thoracic segment,intramedullary mixed signal lesions with spotted hemorrhage,surrounding low signal ring and enhancement heterogeneity is the characteristic MRI findings of the disease.