Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly decreased . Streaky in bibasilar atelectasis is more notable on the left . There is a small left effusion . There is no evidence of focal consolidation , pneumothorax , or pulmonary edema . Allowing for patient rotation , the cardiomediastinal silhouette is within normal limits . A moderate hiatal hernia is noted .
    OUTPUT:
    
Bibasilar atelectasis and small left pleural effusion .