Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , which results in crowding of the bronchovascular structures . Bibasilar atelectasis is present . There is no pleural effusion , pneumothorax or focal airspace consolidation worrisome for pneumonia . The cardiac silhouette remains mildly enlarged , unchanged from ___ . The mediastinal and hilar structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process with persistent cardiomegaly .