Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart is mild - to - moderately enlarged . The mediastinal and hilar contours are unremarkable . The pulmonary vascularity is mildly prominent , suggesting mild congestion . Patchy left basilar opacification suggests minor atelectasis . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggesting mild vascular congestion . Suspected left basilar atelectasis ; otherwise unremarkable .