A 36-year-old woman presents with a history of hemoptysis for 3 days, which worsens on the day of presentation. She describes coughing up bright red blood approximately twice daily (one to two ounces each time). The hemoptysis is accompanied by left-sided chest pain with cough and deep inspiration, which begins a couple of months prior to the initial cough. The pain does not radiate, is intermittent in nature, and is not reproducible with palpation. There are no associated dyspnea, fevers, chills, night sweats, or weight loss. The woman has no history of lung disease or other significant medical history, and reports a normal vaginal delivery 3 months previously. The pregnancy and delivery were without complications, and she is not currently breastfeeding. Her social history is significant for a 10-pack-year smoking history, but she is not a current smoker. She denies any illicit drug use and was not taking any medications prior to presentation. Family history is not significant.