Review Question - QID 214524

A 53-year-old man presents to his primary care provider due to a chronic cough lasting for the last 3 years. The patient has not had any medical care for the last 5 years. He has a history of hypertension controlled by hydrochlorothiazide, hypercholesterolemia, and a tobacco smoking history of 35 years. The patient previously smoked 1 pack per day but cut down to half a pack per day 1 year ago. He reports that he coughs for nearly half of the year and constantly feels the need to clear his throat. His coughs are frequently productive of sputum. He denies any shortness of breath. On exam, his temperature is 98.8°F (37.1°C), blood pressure is 132/88 mmHg, pulse is 80/min, and respirations are 14/min. Oxygen saturation on pulse oximetry is 93% at rest. Lung exam demonstrates diffuse wheezing and crackles bilaterally. Pulmonary function testing is performed, which demonstrates normal total lung capacity (TLC) as well as normal diffusing capacity for carbon monoxide (DLCO). Which of the following histologic findings would be seen if a lung biopsy were to be performed?