Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal , lateral , and left lateral decubitus chest radiographs again demonstrate a left lower lobe opacity , which may represent atelectasis versus pneumonia . Small bilateral effusions are present . There is moderate to severe cardiomegaly and mild vascular congestion .
    OUTPUT:
    
1 . A left lower lobe opacity may represent atelectasis versus pneumonia . 2 . Small bilateral pleural effusions . 3 . Moderate to severe cardiomegaly and mild vascular congestion .