Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . There is status post left - sided upper lobectomy with commensurate mild degree of volume reduction of the left hemithorax . There remains some blunting of the left lateral pleural sinus , but there is no evidence of residual pleural effusion accumulating in the posterior sinus as identified on the lateral view . The on previous examination identified left - sided chest wall emphysema has disappeared completely . Right hemithorax remains unremarkable as before .
    OUTPUT:
    
Satisfactory postoperative findings with mild volume loss of left - sided hemithorax and pleural basal scar formations but no evidence of remaining fluid .