Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is mildly enlarged . Mild tortuosity of the thoracic aorta . There is mild central vascular congestion with cephalization . Streaky bibasilar atelectasis is noted . There is no focal consolidation worrisome for pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly with central vascular congestion , but without frank edema .