Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of an SVC filter since ___ . Again seen is the opacification of the entire left lung and associated volume loss , status post left pneumonectomy in ___ . The right lung is well opacified with no evidence of consolidations or pneumothorax . There is a small right - sided pleural effusion that is new since the last radiograph . No osseous abnormalities .
    OUTPUT:
    
1 . Interval placement of an SVC filter . 2 . New small right - sided pleural effusion .