Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Overlying trauma board limits evaluation . Endotracheal tube tip terminates approximately 4 cm from the carina . An orogastric tube tip is within the stomach . Lung volumes are low . The heart size is mildly enlarged . Mild widening of the superior mediastinum is likely due to supine positioning and low lung volumes . Crowding of the bronchovascular structures is noted . Patchy opacities in the lung bases may reflect atelectasis . No large pleural effusion or pneumothorax is detected on this supine exam . No displaced fractures are evident .
    OUTPUT:
    
1 . Standard positioning of the endotracheal and orogastric tubes . 2 . Low lung volumes . Patchy opacities in the lung bases may reflect atelectasis .