Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable allowing for improved lung volumes on the current study compared with prior , within normal limits . The hila are unremarkable . New since the prior exam has a left mid lung hazy opacity which is concerning for developing infection . Equivocal linear opacity in the right mid lung may reflect platelike atelectasis . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax . There is a left pleural effusion . Suggestion of right mid and lower lung lateral pleural thickening was not clearly seen on the prior , however this may be due to inter-examination differences in technique , possibly focal pleural thickening or trace pleural fluid .
    OUTPUT:
    
1 . Left mid lung pneumonia . 2 . Right lateral pleural thickening versus a trace right pleural effusion .