Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right lower base opacity is more conspicuous than chest radiograph performed earlier on the same day , attention on follow - up needed . Cardiomediastinal silhouette unchanged . Hilar silhouettes unchanged . There is no pneumothorax . No significant interval change since chest radiograph performed earlier on the same day .
    OUTPUT:
    
Right lower base opacity more conspicuous though unchanged and should have close attention on follow - up . Otherwise , no significant interval change since chest radiograph from earlier on the same day