Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiographs obtained 2 days prior , there has been minimal worsening in parenchymal opacities at the right lung base and minimal improvement at the left lung base mid and superior lungs are expanded and clear . Heart size is top normal with mild enlargement of the pulmonary vasculature , but no pulmonary edema . No pleural abnormalities .
    OUTPUT:
    
Bibasilar opacities may reflect underlying pneumonia . Recommend follow - up PA and lateral chest radiographs in ___ weeks to assess for resolution .