Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates interval placement of right subclavian line terminating at the cavoatrial junction . No pneumothorax or pleural effusion identified . Otherwise , the examination is unchanged . There is redemonstration of vague opacification projecting over the left hemithorax with no clear anatomical relationship and may represent increased soft tissue density due to patient 's positioning .
    OUTPUT:
    
New right subclavian venous line without pneumothorax or pleural effusion . Stable opacification projecting over the left hemithorax of unclear etiology , possibly increased due to patient positioning .