Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic deformity of the left sided ribs again seen . There is slight blunting left costophrenic angle , may be due to pleural thickening or pleural effusion . Bibasilar opacities are seen , right greater than left , may be due to aspiration although infectious process is not excluded in the appropriate clinical setting . There is no pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Bibasilar opacities could be due to aspiration or pneumonia . Chronic left - sided rib deformities .