Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . No prior . The lungs are essentially clear , noting mild bibasilar atelectasis . Costophrenic angles are sharp . Cardiac silhouette is enlarged . Hypertrophic changes are seen in the spine .
    OUTPUT:
    
Cardiomegaly without overt pulmonary edema .