Giant Cell Tumor of the Thoracic Spine Presenting as a Posterior Mediastinal Tumor with Benign Pulmonary Metastases: A Case Report

ally involves the metaphysis and epiphysis of long bones. Although the spine is the fourth leading location of GCT, most of these lesions occur in the sacrum, followed by the thoracic, cervical and lumbar vertebrae (1). GCT of bone is a benign, but potentially aggressive lesion that shows local recurrence and metastases. Metastatic lung disease rarely originates from a benign tumor, but this can occur from GCT of bone (2). The incidence of lung metastases from a histologically proven GCT has range from 1% to 9% (3). To the best of our knowledge, this is the first reported case of a thoracic spinal GCT that simulated a mediastinal mass, along with dispaying benign pulmonary metastases, in the medical literature. Here we present a case of a histologically proven thoracic spinal GCT that presented as a mediastinal tumor with pulmonary metastases.