A 63-year-old man comes to the GP because of a 2-month history of non-productive cough and a 5-month history of worsening shortness of breath. His only medication is amlodipine for hypertension, which he has been taking for 6 months. Auscultation of the chest shows bilateral end-inspiratory crackles. Cardiac examination shows a loud P2. Chest x-ray shows diffuse reticular opacities. Serum biochemistry is normal. His vitals are: temperature 98.6F, HR 72, RR 14, BP 135/85. Which of the following is the most likely diagnosis?
Chronic viral illness with autoimmune response
Cryptogenic organizing pneumonia
Drug-induced pulmonary fibrosis
Sarcoidosis
Usual interstitial pneumonia
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Cut-to-the-chase Answer (0:53):
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HY USMLE Answer (6:23):
