Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , right lung base opacity has mildly improved , consistent with slow resolving pneumonia . The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . no pulmonary edema . No pleural effusions .
    OUTPUT:
    
Slowly resolving pneumonia in the left lower lung bases . Recommend chest radiograph in ___ weeks .