Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ET tube terminates approximately 4 cm from the carina . A subtle opacity in the right mid lung is present and may represent pneumonia or aspiration . There is no dense consolidation . There is no pleural effusion . There is no evidence of pneumothorax , although evaluation is limited by the supine technique . The cardiomediastinal silhouette is unremarkable . Atherosclerotic calcifications are noted in the aortic arch .
    OUTPUT:
    
Subtle opacity in the right mid lung may represent pneumonia or aspiration .