A case of mediastinal liposarcoma

Liposarcoma commonly occurs in the lower extremities and retroperitoneum, but rarely in the mediastinum. We report a rare case of primary mediastinal liposarcoma treated surgically. A 77-year-old man seen for an asymptomatic superior mediastinal mass found in magnetic resonance imaging had been exposed to radiation in the atomic bombing of Hiroshima. The large lobulated mass had surrounded and displaced major vessels and the trachea. The encapsulated mass was removed surgically, and the final pathological diagnosis was well-differentiated liposarcoma. (author)