Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size remains mildly enlarged , but this may be accentuated by low lung volumes . Mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Patchy opacities in the lung bases likely reflect atelectasis in the setting of low lung volumes . No definite focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
No evidence of pulmonary edema . Low lung volumes with patchy bibasilar opacities likely reflective of atelectasis . If there is concern for pneumonia , consider repeat PA and lateral views with improved inspiratory effort .