Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There is left lung base consolidation , unchanged . Small left pleural effusion is present . There is no right pleural effusion . There is no pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . There are displaced fractures of the left fourth through eighth ribs .
    OUTPUT:
    
Persistent left lung base consolidation , likely atelectasis , and associated small left pleural effusion . Left - sided rib fractures .