Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is moderately enlarged and is slightly exaggerated by AP technique . The mediastinal silhouette and hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Moderate - to - severe cardiomegaly without evidence of pulmonary edema or congestion . No focal consolidation worrisome for pneumonia .