Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The heart is mildly enlarged . Pulmonary vasculature is within normal limits . Mediastinal silhouette and hilar contours are normal . No acute osseous abnormality is identified .
    OUTPUT:
    
Mild cardiomegaly . No acute cardiopulmonary abnormality .