Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a heart which is normal in size . Left lower lobe and lingular opacities are substantially improved but still persistent . Apical scarring is unchanged . The left pleural effusion has resolved .
    OUTPUT:
    
Substantially improved but persistent left lower lobe and lingular opacities . The left pleural effusion has resolved . Followup chest radiograph in one month is recommended . These findings were entered onto the critical communications dashboard by Dr . ___ at ___ on ___ .