1 MCQs in Medicine for NEET PG
A 38-year-old African-American woman presents with dry cough and dyspnea on exertion. Chest X-ray shows bilateral hilar lymphadenopathy. Spirometry reveals FEV1 65%, FVC 62%, and FEV1/FVC 0.82 (preserved). The parameter marked **A** in the diagram (reduced FVC) reflects a restrictive pattern. DLCO is 55%. Tissue biopsy confirms non-caseating granulomas. Which of the following best describes the pathophysiologic mechanism underlying the restrictive pattern with reduced DLCO in this patient's condition?
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