A case of synovial sarcoma of the mediastinum

Abstract

A 51-year-old woman consulted our hospital with complaints of cough, dyspnea, and edema of the left arm. Chest CT, MRI and angiogram demonstrated a tumor of the anterior mediastinum. Needle biopsy specimen of the tumor obtained under CT guidance was diagnosed as sarcoma pathologically. Extended tumorthymectomy was performed and the pathological diagnosis of the tumor was synovial sarcoma. To our knowledge, only one synovial sarcoma of the mediastinum has been reported previously, and our case is the second report in Japan.