Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , there has been interval removal of an endotracheal tube . The left subclavian line is unchanged in position . There is minimal pulmonary vascular congestion . The heart is stably enlarged without significant vascular congestion , suggesting underlying cardiomyopathy or pericardial effusion . The degree of inspiration is somewhat better today with increased aeration of the left lung .
    OUTPUT:
    
Interval ETT removal . Improved aeration of left lung .