A Rare Case of Posterior Mediastinal Seminoma Mimicking Primary Lung Neoplasm

Abstract

We report an atypical case of posterior mediastinal seminoma. Mediastinal seminomasare a rare form of tumor usually located in the anterior mediastinum. Our casepresented as a diagnostic challenge because of the difficulty of differentiating the primarymediastinal mass from a primary lung neoplasm. Our case highlights the fact thatseminomas may occur in the posterior mediastinum and the importance of consideringa broad differential diagnosis, especially in cases of poorly differentiated carcinoma ofthe mediastinum.

Keywords

• primary mediastinal seminoma
• posterior mediastinum
• primary lung neoplasm
• immunohistochemical staining
• tissue biopsy