Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are persistent patchy right base opacities , worrisome for pneumonia . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Chronic interstitial changes are again noted .
    OUTPUT:
    
Persistent patchy right basilar opacity is worrisome for pneumonia . Recommend follow up ___ weeks after completion of antibiotic therapy , if findings persists , recommend chest CT .