1 MCQs in Medicine for NEET PG
A 32-year-old woman presents with a 6-week history of dry cough, low-grade fever, anterior uveitis, and painful erythema nodosum on the shins with bilateral ankle arthritis. Chest X-ray shows bilateral symmetric hilar lymphadenopathy without parenchymal infiltrates (Scadding Stage I). EBUS-TBNA confirms non-caseating epithelioid granulomas. Pulmonary function testing is shown in the diagram. The spirometric pattern marked **B** is observed. Which of the following BEST explains the reduction in DLCO despite the absence of visible parenchymal infiltrates on chest X-ray in this patient?
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