Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate opacity projecting over the left lung base , with a possible correlate on lateral view projecting over the lower spine . This is concerning for pneumonia . There is no pleural effusion or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Opacity projecting over the left mid to lateral lung base is concerning for pneumonia .