Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . The heart size is normal . The mediastinal and hilar contours are unremarkable . Ill - defined patchy opacities are noted in both lung bases , findings which may be reflective of atelectasis , though infection can not be completely excluded . Focal area of pleural thickening is noted within the right mid lateral hemithorax . There is no pulmonary edema , pleural effusion , or pneumothorax . No acute osseous abnormality is seen .
    OUTPUT:
    
Low lung volumes with patchy opacities at the lung bases which may reflect atelectasis , though infection is not completely excluded .