A 48-year-old man without significant past medical history with multiple days of worsening chest pain.
A 57-year-old woman with chronic shortness of breath, worsening over the past several months.
A 76-year-old man with left scapular pain that radiated to the shoulder, axilla, and proximal left upper extremity.
A 74-year-old woman with chronic, nonproductive cough for months' duration.
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.
