We report a case of primary synovial sarcoma of the lung. The patient was a 32-year-old male who presented with a mass in the right hemithorax invading the peritoneal cavity. The neoplasm was resected through a thoracic-abdominal approach. The patient is doing well 21 months after surgery. Within the last decade thoracic localizations of synovial sarcoma are an emerging histopathological entity thanks to the molecular analysis of the SYT-SSX fusion gene transcript.
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