A 58-year-old male smoker presents to the chest clinic with progressive dyspnea on exertion and chronic cough productive of scanty sputum for the past 3 years. On examination, he has reduced breath sounds bilaterally and prolonged expiration. Spirometry shows: FEV₁ = 52% predicted, FVC = 78% predicted, FEV₁/FVC ratio = 0.58. DLCO is reduced at 65% predicted. What is the most likely diagnosis?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.

Daily MCQs, study tips, and topper strategies on Telegram.