A female patient, age 50, appears with a three-month history of a cough that produces phlegm and is worse in the morning after getting up.
The sputum has a little to moderate amount, a middling consistency, and a pale yellow tint.
No recent ill contacts or fever are present.
Rhonchi are sometimes heard bilaterally during auscultation, particularly in the lower lobes.
The patient has never smoked.
What do you suggest?