骨母细胞瘤的MRI诊断价值

目的:探讨骨母细胞瘤的MRI表现及其诊断价值。方法:对 10 例均行 MRI平扫和增强检查并经手术病理证实的骨母细胞瘤病例进行回顾性分析。结果:脊柱6例,颅骨3例,骨盆1例。骨母细胞瘤以脊柱好发。MRI检查多呈不均匀性长T1、T2 囊状膨胀性骨质破坏,增强扫描多呈不均匀性强化,部分见液 液平和/或软组织肿块。结论:MRI能较准确地显示肿瘤形态、部位、内部结构及与邻近结构的关系,平扫和增强 MRI检查对骨母细胞瘤定性诊断有较高的诊断价值。

Value of MRI in Diagnosing Osteoblastoma

Objective:To study the MRI findings of osteoblastoma and evaluate MRI in the diagnosis of the disease.Methods:A retrospective analysis was made on MR imaging of 10 patients with pathologically proved osteoblastoma.The unenhanced and enhanced scans were performed in all patients.Results:Of 10 cases,the lesions located at spine in 6,at skull in 3 and at pelvis in 1.Predilection site of osteoblastoma was found in spine.On MRI images,the lesion presented as expanding bony destruction,and MR images always showed a multicystic appearance with inhomogeneous low signal intensity on T 1WI and inhomogeneous high signal intensity on T 2WI.After contrast madium injection the lesions showed inhomogeneous enhancement.Fluid level and/or soft tissue mass were found in some patients.Conclusion:MRI can accurately demonstrate the form,location,internal structure and the relationship with surrounding structures.The unenhanced and enhanced MRI scanning is very helpful in the correct diagnosis of osteoblastoma.