Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is a consolidative opacity in the left lung base with air bronchograms , concerning for pneumonia or aspiration . Diffuse opacity is also seen in the left lung base , which may represent a layering small left pleural effusion . There is no pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Consolidative opacity in the left lung base with air bronchograms , concerning for pneumonia or aspiration . Possible layering small left pleural effusion .