Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged and stable since prior . There is mild enlargement of the mediastinal silhouette , likely secondary to a tortuous and dilated thoracic aorta , stable since prior . There is also enlargement of the main pulmonary artery which could reflect underlying pulmonary hypertension . There are tiny stable bilateral pleural effusions . Increased density at the upper lobes bilaterally and right lower lobe is felt to reflect scarring and fibrosis as was seen on prior chest CT . No definite new focal consolidation identified .
    OUTPUT:
    
Stable tiny bilateral pleural effusions . Chronic changes related to scarring or fibrosis in the upper lobes bilaterally and right lower lobe . No new focal consolidation identified .