Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged . The mediastinal and hilar contours are unremarkable . Lung volumes are low with patchy opacities in the lung bases , likely atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There is no pulmonary edema . No acute osseous abnormality is detected .
    OUTPUT:
    
Low lung volumes with patchy opacities in the lung bases , most likely atelectasis .