Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is borderline enlarged . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged , but there is crowding of the bronchovascular structures . Patchy opacities in the lung bases may reflect areas of atelectasis . Infection or aspiration can not be excluded . No pleural effusion or pneumothorax is present . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes limit assessment of the lung bases . Patchy opacities in the lung bases may reflect atelectasis but infection or aspiration can not be excluded . Consider repeat PA and lateral views with improved inspiratory effort for further assessment of the lung bases .