Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube terminates approximately 3 .3 cm above the carina . Lung volumes are low . Cardiomediastinal silhouette is within normal limits allowing for the portable technique and supine positioning . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Appropriate positioning of the endotracheal tube .