Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously described increased opacity within the bilateral lung bases appear similar to prior and may be related to resolving pneumonia . No new confluent opacity is identified . There is no vascular congestion or overt interstitial edema . Blunting of the right costophrenic angle is stable from prior , may reflect a small unchanged effusion . Mediastinal and hilar contours are within normal limits . Moderate - to - severe cardiomegaly appears unchanged .
    OUTPUT:
    
1 . Possible resolution of prior bibasilar pneumonia . No new confluent opacity to suggest acute infection . 2 . Unchanged probable small right pleural effusion . 3 . Unchanged moderate - to - severe cardiomegaly .