Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding and subsegmental atelectasis . Pulmonary vascular congestion is decreased compared with the prior study , now mild . Previously seen pulmonary edema has resolved . Opacity in the right lower lobe is increased from the immediate prior radiograph , similar to ___ . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is within normal limits for AP technique .
    OUTPUT:
    
1 . Right lower lobe opacity is increased from the immediate prior study may represent pneumonia , atelectasis , or aspiration . 2 . Interval decrease in pulmonary vascular congestion and resolution of pulmonary edema .