Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . A new area of consolidation has developed in the left lower lobe , predominantly in the retrocardiac area , and a more subtle area of opacity has developed in the right infrahilar region . Small bilateral pleural effusions are also new .
    OUTPUT:
    
1 . New bibasilar opacities , most prominent in the left retrocardiac region . These findings may be due to acute aspiration or developing pneumonia in the appropriate clinical setting . Short - term followup radiographs may be helpful in this regard . 2 . New small bilateral pleural effusions .