四例脊髓结核瘤的MRI表现分析

Analysis of MRI findings of spinal intramedullary tuberculoma： Four cases reports

目的分析脊髓结核瘤的MRI表现，提高对该病的认识和诊疗水平。方法回顾性分析4例经临床证实的脊髓结核瘤患者的临床资料和MRI表现。结果4例患者中共发现5个病灶；1例病灶位于颈段脊髓，呈结节样强化；其余3例共4个病灶位于下胸段脊髓，其中1例伴发1个粟粒性结核瘤，其余3个病灶呈椭圆形，横断面T2WI表现为典型的“靶征”，增强后呈环状强化，边界清楚，且长轴与脊髓长轴一致。结论脊髓结核瘤的MRI表现具有一定特征性，准确认识这些表现有助于早期诊断。

Objective To improve the diagnosis and management of spinal intramedullary tuberculoma by analysis of the MRI findings. Methods The clinical profile, MRI findings of 4 cases of intramedullary tuberculo ma confirmed by cIinic were reviewed retrospectively. Results A total of 5 tuberculomas were found in the four patients, of which one lesion was located in cervical spinal cord and showed nodular enhancement. The other lesions were distributed in the inferior segment of thoracic spinal cord, of which a lesion was miliary tuberculoma and the rest of three lesions were oval with a typical ＂target sign＂ on T2-weighted image. After gadopentetate dimeglumine administration, the three lesions showed rim enhancement, clear border and long axis in accordance with the spinal cord＇s. Conclusion The MRI findings of spinal intramedullary tuberculomas showed particularly characteristic signs. If the specific MRI findings were recognized accurately, the early diagnosis could be obtained.