Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest film ___ at 16 :43 is submitted .
    OUTPUT:
    
Right subclavian PICC line remains unchanged in position with the tip in the distal SVC . Tracheostomy tube remains in place . Low lung volumes with patchy bibasilar opacities suggestive of atelectasis and probable associated left effusion . Crowding of vasculature with no overt pulmonary edema . No pneumothorax . Hardware is seen overlying the mid and lower cervical spine . There is a tiny lucency beneath the right hemidiaphragm which could represent trace free air .