A 31-year-old woman presented with 3 months of hemoptysis (one-half cup daily), left chest pain, and intermittent expectoration. The sputum was described as having a “cheeselike” appearance, occurring every 5 to 6 days. She reported mild shortness of breath for 2 months but no weight loss, night sweats, or fevers. Her chest pain was episodic in nature and occasionally pleuritic. She denied nausea, vomiting, rashes, or joint pain. Her menses were regular and of normal quantity. Six years prior, she presented to another institution with an acute onset of hemoptysis and underwent left internal mammary arterial embolization. A diagnosis was not established, and she was lost to follow-up. The hemoptysis had subsided following the embolization but now returned.