Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable , reflective of a tortuous thoracic aorta and probable mild cardiomegaly . Lung volumes are low . There is probably minimal left basilar atelectasis . Otherwise , there is no new focal lung consolidation . There is no pulmonary edema . There is no pneumothorax . It would be difficult to exclude a small left pleural effusion given appearance . No sizable right pleural effusion .
    OUTPUT:
    
Relatively stable chest radiograph demonstrating mildly increased left basilar opacity the setting of lower lung volumes , probably representing atelectasis .