Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , asymmetric upper lobe perihilar opacities have marginally improved . There remains mild retraction of the hila bilaterally suggestive of volume loss and fibrosis . Bilateral lower lobe nodular opacities have increased . Moderate cardiomegaly . No pleural effusions or pneumothorax .
    OUTPUT:
    
Bilateral nodular lower lobe opacities have increased since ___ , can be infection including atypical organisms . Bilateral upper lobe perihilar fibrosis with slight improvement of likely superimposed acute infection or inflammatory changes .