Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The patient 's kyphotic positioning limits the evaluation with patient 's chin obscuring the superior mediastinum . There are bilateral linear opacities in the lower lungs , most compatible with atelectasis . No convincing signs of pneumonia , CHF , or pleural effusion . The heart size can not be assessed . Mediastinal contours can not be assessed . Bony structures are intact .
    OUTPUT:
    
Lower lung atelectasis . Limited exam .