Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette appears mildly enlarged . There is calcification of the aortic knob . Pulmonary vascular congestion is accompanied by interstitial edema . More confluent opacities at the lung bases are also demonstrated , right greater than left . No large pleural effusion or pneumothorax identified on this portable radiograph .
    OUTPUT:
    
Pulmonary vascular congestion and interstitial edema . More confluent opacities at the lung bases could relate to dependent pulmonary edema , although aspiration and infectious pneumonia are additional considerations in the appropriate clinical setting . Short - term followup radiographs may be helpful in this regard if warranted clinically .