Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is relatively unchanged . The mediastinal and hilar contours are unremarkable . There is no focal consolidation , pleural effusion or pneumothorax . Linear opacity within the anterior aspect of the upper lobe , possibly in the left upper lobe , is best seen on lateral view , and is compatible with subsegmental atelectasis . While there may be mild pulmonary vascular congestion , no overt pulmonary edema is seen . Mild degenerative changes of the thoracic spine are visualized . Clips are seen within the upper abdomen on the lateral view .
    OUTPUT:
    
Mild pulmonary vascular congestion . Subsegmental atelectasis within likely the left upper lobe .