骨原发性淋巴瘤的MRI表现

目的:探讨骨原发性淋巴瘤的MRI表现及其诊断价值。方法:对8例经手术病理证实,MRI资料完整的骨原发性淋巴瘤进行回顾性分析。8例均行MRI平扫和增强。结果:7例为单骨发病,1例为多发。7例为B细胞源性,1例为T细胞源性。病变在T1WI多呈等或稍低信号,T2WI多呈等或稍高信号,呈明显均匀或不均匀强化。8例均合并大小不等的软组织肿块影。结论:骨原发性淋巴瘤主要发生于脊柱和骨盆,多侵犯单骨。软组织肿块大、骨膜反应轻、T2WI信号不高,增强扫描多呈明显强化,是其相对特征影像学特点。平扫和增强MRI检查对骨原发性淋巴瘤定性诊断有较高的诊断价值。

MRI findings of primary lymphoma of bone

Objective: To study the MRI findings of primary lymphoma of bone(PLB) and evaluate MRI scanning in the diagnosis of the disease. Methods: A retrospective analysis was made on imaging of 8 patients with pathologically proved PLB. The unenhanced and enhanced scanning was performed in all patients. Results: There was single bone involvement in 7 cases and multiple involvement in 1 case. Seven cases were B-lymphocytes, while 1 case was T-lymphocytes. Most of the lesions showed iso- or hypo-intense signal on T1WI and iso- or slightly hyperintense signal on T2WI. Lesions showed significantly homogeneous or inhomogeneous enhancement. Various size soft-tissue masses were present in all cases. Conclusion: PLB mainly involved vertebrae and pelvis. There was single bone involvement in most cases of PLB. The comparatively typical features of MRI were a large accompanying soft tissue mass, slight periosteal reaction, and isointensity on T2WI with significantly enhancement. The plain and enhanced MRI scanning were all very helpful in the diagnosing of PLB.