A 22-year-old man has had two episodes of bacterial pneumonia and sinusitis since middle school. He went camping last year at his friend’s lake house and had floaty stools which were managed successfully with metronidazole. He complains of a dry cough the past few years, notably in the winter. Which of the following best explains his pulmonary findings?
Decrease in musculature of the airways
Gastroesophageal reflux disease
Helminth infection
Increased activation of mast cells
Non-caseating granulomatous inflammation
—
Cut-to-the-chase Answer (0:51):
—
HY USMLE Answer (5:21):
