Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are normal . Compared to the prior study , there is a new consolidation in the right middle lung with sparing of the right upper lung . There is also likely an element of atelectasis of the right middle lobe . The left lung is clear . Pleural effusions or pneumothorax .
    OUTPUT:
    
Compared to the prior radiograph in ___ , new consolidation in the right middle lung , with an element of atelectasis , is likely infectious and concerning for aspiration , given the history of achalasia . Patient should be followed to ensure this is not a postobstructive pneumonia .