Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates low lung volumes with exaggeration of the cardiac silhouette . There is mild to moderate vascular congestion and pulmonary edema . Bilateral small pleural effusions are noted , with superimposed bibasilar atelectasis . No definite focal consolidation identified . No appreciable pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . Mild to moderate vascular congestion and pulmonary edema . 2 . Bilateral small pleural effusions with superimposed bibasilar atelectasis . No definite focal consolidation identified , although a superimposed infection can not be excluded .