Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , the lines and tubes have been removed . There are low inspiratory volumes . The cardiomediastinal silhouette is unchanged . Again seen is patchy opacity at the left base , with air bronchograms . This appears slightly more pronounced than on the prior study , with some interval obscuration of the left hemidiaphragm and new opacity along the left chest wall . The right infrahilar patchy opacity is similar to the prior film . Mild vascular plethora is more pronounced .
    OUTPUT:
    
1 . Interval worsening of opacity at left lung base , consistent with collapse and / or consolidation . 2 . Probable slight increase in vascular plethora / CHF .