Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . The heart size is mildly enlarged , similar to ___ , but more than expected for patient 's age . Mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
Mild cardiomegaly without evidence of acute decompensation .