Malignant Thymoma Involving the Thoracic Vertebral and Spinal Canal: Case Report

Most thymomas are found in the superior and anterior mediastinum and malignant thymomas are exceedingly rare in the first 20 years of life. A child of malignant thymoma with invasion into the thoracic vertebra and spinal canal is reported. The tumor was originated from posterior mediastinum and involved posteriorly the D8, D9 vertebra resulting in paraparesis was improved. Computed tomography is mandatory in detecting the metastasis and evaluation of treatment.