Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral perihilar alveolar opacities concerning for pulmonary edema . More confluent opacity in the left mid lung raises concern for possible underlying pneumonia . No large pleural effusion is seen . There is no evidence of pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Bilateral perihilar alveolar opacities concerning for pulmonary edema . More confluent opacity in the left mid lung raises concern for possible underlying pneumonia .