63-year-old man with progressive dyspnea
A 63-year-old man -- a former smoker with a 20-pack-year smoking history -- with worsening dyspnea.
A 63-year-old man -- a former smoker with a 20-pack-year smoking history -- with worsening dyspnea.
A healthy 15-year-old boy with a two-week history of a persistent, productive cough.
A 45-year-old woman with several days of dyspnea and fever.