A 24-Year-Old Man With Recurrent Hemoptysis

A 24-year-old man was admitted for a new episode of hemoptysis. He reported 3 episodes of hemoptysis in the past 2 years. He had no other medical history and was a nonsmoker. As a Vietnamese person born and living in Vietnam, he was at risk for TB, but had not had contact with those having TB in his family or workplace, was never imprisoned nor homeless, and never traveled abroad. He never experienced pneumonia. He coughed up a small amount of fresh with air red blood (around 5 mL each time) several time for 3 days. He had no dyspnea, no chest pain, no fever, no asthenia, and no anorexia.