Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs . Lung volumes are low with bibasilar atelectasis and a small pleural effusion on the left . Mild interstitial edema is also apparent . There is no definite focal consolidation or pneumothorax . The cardiomediastinal silhouette is normal . Sagittal elongation of the trachea is noted .
    OUTPUT:
    
Mild interstitial pulmonary edema .