Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and mitral valve repair . Cardiac silhouette size is mildly enlarged but unchanged . Mediastinal and hilar contours are similar . Bilateral calcified pleural plaques are again noted which obscure assessment of the pulmonary parenchyma . Hazy opacities within the lung bases with increased interstitial markings appear similar compared to the previous CT and chest radiograph . Chain sutures are seen within the right lower lobe . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Relatively unchanged appearance of the chest with bilateral calcified pleural plaques and slightly hazy opacities with increased interstitial markings at the lung bases suggestive of chronic interstitial lung disease , better characterized on the previous CT exam . No new focal consolidation .