Abstract
Spontaneous pneumothorax is a rarely seen complication in metastatic pulmonary diseases. It could be the first symptom and might be seen in the post chemotherapy period. We here report a 20-year-old male with surgically treated- bilaterally spontaneous pneumothorax who had hypopharyngeal synovial sarcoma initially and had been treated with surgery and chemotherapy. We emphasised that spontaneous pneumothorax could be caused by pulmonary mature metastais of synovial sarcoma, as a result of air leakage. Surgical treatment such as metastasectomy and pulmonary paranchimal repair and intraoperatively chemical pleurodesis would be required (Tur Toraks Der 2011; 12: 81-3)