Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly decreased . Blunting of the costophrenic sulcus posteriorly on the lateral view may suggest the presence of trace pleural thickening or pleural effusions . There is no focal consolidation or pneumothorax . There is no central vascular congestion or overt pulmonary edema . Slightly widened mediastinum with unfolding of the thoracic aorta is similar . Moderate - to - severe cardiomegaly is unchanged . There are moderate calcifications of the aortic knob .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Trace , if any , bilateral pleural effusions or pleural thickening . 3 . Stable moderate - to - severe cardiomegaly .