Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is enlarged . The aorta also appears significantly enlarged at the arch . There is mild lobulation of the pleura , suggestive of possible pleural plaques . The lungs are otherwise clear with no evidence of consolidation , effusion , or pneumothorax . No acute fractures are identified .
    OUTPUT:
    
1 . The aorta appears significantly enlarged . Correlation with clinical symptoms is recommended to ensure that this is not an acute dissection . Otherwise , a dedicated chest CT is recommended in a non-emergent setting for further characterization . 2 . Moderate cardiomegaly . 3 . Slight prominence of the pleura suggestive of possible pleural plaques .