Thoracic mediastinal Chordoma an atypical location – Mimicking as Adenocarcinoma

Background: Chordoma, a rare tumor accounting for less than 4% of primary bone tumors of which incidence of thoracic chordoma is 2-5%. Describing an incidental diagnosis of chordoma in a posterior mediastinal mass. Case description: An asymptomatic 52year lady with an incidental posterior mediastinal mass was diagnosed Adenocarcinoma on endoscopic biopsy of the oesophagus. Nonresponsiveness to chemoradiotherapy warranted en-bloc resection with VATS- assisted thoracotomy which turned to be a Chordoma. Conclusion: We report this atypical presentation of chordoma mimicking as adenocarcinoma with literature review — a unique learning experience.