Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is difficult to assess given posttreatment changes in left lung . Mediastinal surgical clips are noted . There is opacity in the left lower lung with elevation of the left hemidiaphragm and blunting of left lateral CP angle with left lateral pleural thickening . This correlates to findings on a CT chest from ___ , likely relating to post treatment changes in the left lung . The left upper lung is grossly clear . The right lung is mildly hypoinflated but clear . There is no pneumothorax . There is no right pleural effusion . There is no pulmonary edema .
    OUTPUT:
    
Post - treatment changes in the left lung correlate to findings from prior CT chest from ___ , not appreciably changed . No evidence of superimposed acute cardiopulmonary process .