Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The chest is hyperinflated . Band - like areas of opacity in the lower lungs are most consistent with atelectasis , more striking at the right than left lung base . No free air is identified .
    OUTPUT:
    
Basilar opacities suspected to represent atelectasis . No evidence of free air .