Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is normal in size and appears decreased compared to ___ . Tortuosity of the thoracic aorta is unchanged . Lungs are clear except for minimal linear scar at the periphery of the right lung base . Small left pleural effusion is new compared to ___ radiograph . No acute skeletal findings .
    OUTPUT:
    
Small left pleural effusion . No evidence of pneumonia .