Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , mediastinal , and hilar contours are normal . There is unchanged tenting of the left hemidiaphragm . There are coarse interstitial markings in the bilateral lung bases , consistent with chronic changes . However , there is an increased coalescent opacity at the right lung base , consistent with developing pneumonia .
    OUTPUT:
    
Increased coalesce in opacity at the right lung base , consistent with developing pneumonia given the patient 's clinical history .