Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Extensive fibrosis is again noted consistent with known I LD , not significantly changed from the prior chest radiographs and CT dated ___ . Difficult to evaluate for a superimposed pneumonia though no new dense consolidation is identified . No large effusion or pneumothorax . The cardiomediastinal silhouette appears grossly unchanged . The trachea is deviated to the right at the level of the superior mediastinum though this is unchanged . Bony structures appear intact .
    OUTPUT:
    
Essentially stable pattern of interstitial pulmonary fibrosis without overt evidence for superimposed acute process .