Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours are unchanged . There is mild pulmonary vascular congestion . Patchy right basilar opacity may reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is detected .
    OUTPUT:
    
Mild pulmonary vascular congestion . Patchy right basilar opacity may reflect atelectasis , however infection is not excluded in the correct clinical setting .