Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a mild interstitial abnormality , possibly attributable to pulmonary congestion . Vague but more dense opacities can be seen in the lower lungs , greater on the left than right , in association with low lung volumes . This appearance probably is due to a combination of mild atelectasis and pulmonary congestion .
    OUTPUT:
    
Findings suggestive of mild vascular congestion and basilar atelectasis . If developing infection is a possible consideration , then short - term followup PA and lateral radiographs could be considered , however .