Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mild to moderately enlarged . The mediastinal contour is unchanged . Mild pulmonary vascular congestion is re - demonstrated . Lung volumes are low without focal consolidation . Patchy right basilar opacity may reflect atelectasis , but infection can not be completely excluded . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion . Patchy right basilar opacity may reflect atelectasis , however infection is not excluded in the correct clinical setting .