Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiographs , there has been interval progression of a left lower lobe opacification , likely due to a combination of pleural thickening and pleural fluid . Evaluation for interval change from the prior CT is difficult given the different technique and patient positioning . There is minimal left basilar atelectasis . The remainder of the lungs are clear . The cardiomediastinal silhouette is normal . The osseous structures are unremarkable .
    OUTPUT:
    
Increase in the left lower lobe opacifications since ___ , likely due to a combination of pleural thickening and pleural fluid . Results were discussed with Dr . ___ at 2 :00 PM on ___ via telephone .