A PULMONARY MASS PRESENTING AS PRIMARY MONOPHASIC SYNOVIAL SARCOMA
Introduction: Primary pulmonary synovial sarcoma is an extremely rare tumor with only few case reports in the literature.
Case presentation: A healthy 53-year-old woman was admitted for investigation of a pulmonary mass found on a routine X-ray. She had no history of any malignant disease . There was a history of progression in size of the pulmonary mass. Thoracic MRI disclosed a soft-tissue mass in the lower lobe of the right lung with bilateral basal pleural and pleuropericardial adhesions. No abnormal lymph nodes were noted. Further work-up for metastases was negative. Subsequently, the lower lobe of the Right lung was removed and the diagnosis was a monophasic synovial sarcoma.
Conclusion: The diagnosis of monophasic primary pulmonary synovial sarcoma requires clinical, imaging and immunohistochemical investigation to exclude alternative primary sources. The treatment of choice is excision (lobectomy or pneumonectomy), which in most of cases is helpful for diagnosis. The prognosis is usually poor.