Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The position of the left chest tube is difficult to assess , as its tip is presumed to be superimposed over ribs and bowel . There is residual left pleural effusion . Lung volumes are low , producing bronchovascular crowding and basilar atelectasis , and making assessment of the lung bases difficult . No pneumothorax or large right pleural effusion .
    OUTPUT:
    
1 . Residual left pleural effusion . Left chest tube position is difficult to assess . 2 . For evaluation of the lung bases , PA and lateral chest x-ray with the patient taking a deeper breath , if possible , is recommended .