Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Linear opacities in the bibasilar bases likely reflect atelectasis or scarring . There are no areas of focal parenchyma opacities to suggest pneumonia . Heart size is moderately enlarged , without significant pulmonary edema . There is no pleural effusion .
    OUTPUT:
    
1 . No acute pneumonia . 2 . Moderate cardiomegaly without pulmonary edema . Differential includes cardiomyopathy versus pericardial effusion .