Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is now complete opacification of the right hemi thorax and leftward shift of the mediastinal structures . On the prior chest radiograph , there was a small amount of aeration in the right upper lung , this is no longer seen . Known left pulmonary nodules are better seen on CT . No pneumothorax is seen .
    OUTPUT:
    
Complete opacification of the right hemithorax . On the prior chest graft from ___ , there was a small amount of aeration in the right upper lung , which is no longer present .