Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube has been pulled back and now ends 3 cm above the carina . The nasogastric tube ends in the stomach . Left basilar opacity has almost resolved . The right lung is clear . There is no pneumothorax or pleural effusion . The aortic knob is calcified . The heart size is normal .
    OUTPUT:
    
1 . The endotracheal and nasogastric tube are now in appropriate position . 2 . The left retrocardiac opacity has almost resolved .