Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size remains moderately enlarged . Mediastinal and hilar contours are grossly unchanged . Bibasilar airspace opacities may reflect areas of atelectasis . Small right pleural effusion may be likely present . There is no pulmonary vascular congestion . The apices are obscured by overlying external jewelry , but no large pneumothorax is seen .
    OUTPUT:
    
Low lung volumes with bibasilar airspace opacities , likely atelectasis , with probable small right pleural effusion .