60-year-old man comes to the office due to cough and dyspnea on exertion. He has had the cough for over 2 years, but it has
become worse recently and is accompanied by increasing shortness of breath. The cough is productive with a small volume of
mucoid sputum He has no hemoptysis, chest pain, or leg swelling The patient has a 40-pack-year smoking history and drinks 1 or 2
glasses of wine daily He has worked in a shipyard for 1 0 years. His other medical problems include rheumatoid arthritis and
hypertension The patient’s temperature is 37.2 C (99 F), blood pressure is 140/80 mm Hg, pulse is 80/min, and respirations are
20/min. Chest x-ray reveals prominent bronchovascular markings and mild diaphragmatic flattening Pulmonary function test results
are as follows
FEV1 67% of predicted
FVC 95% of predicted
FEV1/FVC ratio 0.65
Diffusion capacity of the lung for carbon monoxide is 100% of predicted value. Which of the following is the most likely cause of this
patient’ s symptoms?
- QA Asbestosis
- 0 B. Bronchiectasis
- 0 C. Chronic bronchitis
- 0 D. Panacinar emphysema
- 0 E. Pulmonary fibrosis
- () F Silicosis
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