Schematic classification of interstitial lung diseases according to aetiology. The finding of histological usual interstitial pneumonitis in a patient with an idiopathic interstitial pneumonia leads to the specific diagnosis of idiopathic pulmonary fibrosis. NSIP = non-specific interstitial pneumonitis.



Source: http://www.clinmed.rcpjournal.org/content/17/2/146.long



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