63-year-old Man, in Medicine / Internal Medicine — 63yo Man | Respiratory / Pulmonology | SMLE Q#11230
SMLE Question #11230
Medicine / Internal Medicine
Respiratory / Pulmonology
Objective: OBJ-123
Last updated: February 2026
A 63-year-old man, former smoker, has 1 year of progressive exertional dyspnea and dry cough. Examination shows digital clubbing and fine end-inspiratory crackles at both lung bases. Chest X-ray shows bilateral basal reticular opacities without pleural effusion. Interstitial lung disease is suspected. Which diagnostic test should be performed next to establish the diagnosis?
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