Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared with the prior chest radiograph , there is a new airspace opacity in the inferior right upper lobe abutting the minor fissure . The more superior right upper lobe also appears somewhat increased in density . Otherwise , there has been no significant change . There is no evidence of pleural effusion , pneumothorax , or overt pulmonary edema . The heart size is top normal . Mediastinal contours are unchanged . Aortic knob calcifications are present . A left pectoral pacemaker is noted with humeral head with two intact leads seen terminating in the expected locationd . Partially imaged orthopedic hardware is seen in the region of the left humeral head .
    OUTPUT:
    
New right upper lobe airspace opacification , concerning for pneumonia . Recommend followup in 4 weeks following antibiotic therapy to document resolution .