Investigation
Investigation is tailored towards the symptoms and signs. Most patients have blood testing, chest x-ray, pulmonary function testing, and high resolution CT thorax. HRCT thorax is the best mode of investigation to diagnose interstitial lung disease.
A lung biopsy is required if the clinical history and imaging are not clearly suggestive of a specific diagnosis or malignancy cannot otherwise be ruled out.
DLCO will be decreased in these patients.
Read more about this topic: Interstitial Lung Disease
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