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 and bronchovascular crowding . Even allowing for this , there is at least moderate cardiomegaly . Bilateral opacities are likely related sella mild to moderate vascular congestion and pulmonary edema , as well as atelectasis . This is similar to slightly increased compared to ___ . Dense retrocardiac consolidation is likely related to edema , but superimposed consolidation can not be excluded . There is no appreciable pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Mild to moderate vascular congestion and pulmonary edema . Possible bilateral pleural effusions with atelectasis . Retrocardiac opacity which may be due in part to pulmonary edema and atelectasis limits evaluation of the left lower lung , and superimposed pneumonia can not be excluded .