Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . Background changes of chronic pulmonary disease are again noted . Cardiomediastinal silhouette is unchanged . Increased opacity at the left costophrenic angle appears to be similar to the prior exam . No pleural effusion , edema , or focal consolidation to suggest a focal pneumonia . Multilevel degenerative changes of thoracic spine are similar . No pneumothorax .
    OUTPUT:
    
No significant interval change . Findings consistent with chronic pulmonary disease .