A Boulder in the Chest

A 79-year-old woman presented with dyspnea and cough. Workup revealed a pulmonary artery mass. After undergoing surgery, she was treated with adjuvant immunotherapy for an undifferentiated pulmonary artery sarcoma. Fifteen months after surgery, there was no evidence of recurrence. The case is discussed, imaging presented, and the published reports reviewed. ( Level of Difficulty: Intermediate. )

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