Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size appears mildly enlarged . The aorta is slightly unfolded . Hilar contours are not enlarged . Linear opacities within the right middle lobe are compatible with subsegmental atelectasis . While there is a suggestion of mild pulmonary vascular congestion , no frank pulmonary edema is seen . No large pleural effusion or pneumothorax is identified . There are multilevel degenerative changes in the thoracic spine with osteophyte formation .
    OUTPUT:
    
Possible mild pulmonary vascular congestion , but no evidence for pneumonia .