Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal and hilar contours . Stable enlarged cardiac silhouette . Minimal bibasilar atelectasis is relatively unchanged compared to next preceding study . Otherwise , lungs are clear . No pleural effusion or pneumothorax evident . No osseous abnormality identified .
    OUTPUT:
    
Stable cardiomegaly with minimal bibasilar atelectasis .