Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . Heart size and cardiomediastinal contours are unremarkable . There is increased lucency of the right hemithorax with right upper lung chain sutures , consistent with history of lobectomy . There is bibasilar atelectasis with slight elevation of the right hemidiaphragm . Hazy left upper lung opacity is new since the prior exam . Previously seen left lower lung opacity has improved . Indistinct and blunted appearance of the right costophrenic angles may represent a small pleural effusion , though this may in part be explained by motion artifact . No pneumothorax .
    OUTPUT:
    
1 New left upper lung hazy opacity , consistent with infection . This could be further evaluated with conventional frontal and lateral radiographs if clinically indicated . 2 . Interval improvement in previously seen left lower lung opacity . 3 . Increased chronic blunting of right costophrenic angle may be due to motion or a small pleural effusion .