Metastatic synovial sarcoma of the left ventricle

A metastatic synovial sarcoma of the left ventricle is described. A 26-year -old Japanese woman underwent resection of a synovial sarcoma of the right thigh 8 years prior to admission, which was followed by multiple surgical p rocedures for pulmonary metastasectomy. Echocardiography demonstrated obstr uction of the outflow tract of the left ventricle caused by a metastatic tu mor, which was surgically resected on the day of admission. The histologic characteristics of the cardiac tumor were identical to those of the pulmona ry metastases. Additional cardiac metastasectomy was performed 9 months lat er. She complained of dyspnea on exertion 8 months after the second cardiac metastasectomy due to recurrence in the heart. Radiotherapy with LINAC (a total dose: 50 Gy) diminished the size of the tumor temporarily. The patien t died 20 months after the initial cardiac metastasectomy.