Pulmonary artery sarcoma misdiagnosed as a pulmonary embolism: A case report.

Pulmonary artery sarcoma is a rare type of tumor and is easily misdiagnosed. We report a case of pulmonary artery sarcoma in a 26-year-old young man who presented with acute onset of dyspnea. Computed tomographic angiography of the chest had revealed a large filling defect within the main pulmonary artery (PA) that extended into both right and left PAs. Because pulmonary embolism was suspected, both anticoagulant and thrombolytic therapies were initiated. The patient responded poorly to these therapies, leading to the resection of the mass. After an uneventful postoperative course, the patient was discharged from the hospital on postoperative day ten. He was subsequently treated with chemotherapy and continued to show no evidence of disease. Multimodal therapy can provide prolonged survival.