A 51-year-old male smoker presents with fever and a cough productive of greenish-yellow sputum. The patient states that he has had a morning cough with excessive mucus production for the past 5 years. Which of the following abnormalities would most likely be found in this patient?
Apical cavitary lesions on x-ray Curschmann spirals in his sputum Elevated salt levels in his sweat Increased Reid index