Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate left pleural effusion with overlying atelectasis , underlying left base consolidation is difficult to exclude radiographically . The lateral view is less than optimal due the patient 's overlying arm . No right pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . Multiple left - sided rib fractures were better seen on preceding CT .
    OUTPUT:
    
Moderate left pleural effusion with overlying atelectasis . Multiple left - sided rib fractures better seen on CT .