Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Prominent interstitial markings are likely exaggerated due to low lung volumes on the AP technique . There is no pulmonary vascular congestion or overt edema . No definite consolidation is identified . Increased density overlying the spine on the lateral projection likely represents thoracic osteophytosis as seen on prior lateral chest radiograph from ___ . There is no pneumothorax . Mediastinal and hilar contours are within normal limits . Cardiac silhouette is moderately enlarged which is new from prior examination and may reflect cardiomegaly or new pericardial effusion . There is persistent mild elevation of the anterior right hemidiaphragm .
    OUTPUT:
    
1 . Low lung volumes , though no definite consolidation or edema . 2 . Moderate enlargement of the cardiac silhouette which is likely exaggerated by low lung volumes , but there may be possible new cardiomegaly or interval development of a pericardial effusion .