Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar atelectasis is noted . There is no lobar consolidation , pleural effusion , pneumothorax , or overt pulmonary edema . The cardiomediastinal silhouette is unchanged . A large hiatal hernia is again noted .
    OUTPUT:
    
Bibasilar atelectasis without convincing evidence for acute cardiopulmonary process .