Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear well expanded lungs . There is interval improvement in pulmonary vascular congestion . There is no pleural effusion , or pneumothorax . The cardiac silhouette remains moderately enlarged . The mediastinal contours are notable for aortic tortuosity and prominent contours of the pulmonary arteries .
    OUTPUT:
    
Moderate cardiomegaly , with no acute chest abnormality .