Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Right base atelectasis is again seen , likely decreased as compared to the prior study . There is also evidence of medial left base atelectasis / scarring . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Bibasilar atelectasis , right greater than left , continues to improve since prior studies .