Methods: 28 cases with recrudescent intra-spinal canal tumors were analyzed, and the causes of recrudescence were predicated.
方法：对28例椎管内复发肿瘤进行临床回顾性分析，并推断其复发因素。
Objective To study retrospectively the clinical diagnosis and operative characterization of recurrent intra-spinal canal tumors.
目的研究复发椎管内肿瘤的临床诊断和手术治疗特点。
Objective To evaluate the magnetic resonance imaging (MRI) features characterizing embryonal tumors in the spinal canal.
目的评估椎管内胚胎性肿瘤的MRI特征。
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