Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is mild to moderate cardiomegaly , similar in configuration to the prior study . There is minimal upper zone redistribution , similar to the prior study . Doubt interstitial or alveolar edema . No effusions are identified . Probable subsegmental atelectasis at both lung bases . However , no focal consolidation is identified .
    OUTPUT:
    
Cardiomegaly and upper zone redistribution , similar to the prior study . Doubt superimposed interstitial or alveolar edema .