Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The previously persisting postoperative pleural densities have markedly improved , the diaphragm now in almost normal position with a small blunting density obscuring the lateral right pleural sinus , but not extending significantly in the posterior area . Mild degree of pleural space thickening ( less than 2 mm ) remains along the right lateral chest wall and extends in the apical area . A vertically oriented density exists in the apical area of the right upper lobe and most likely represents scar formations after the apical blebectomy . No residual pneumothorax can be identified . Heart size is normal , and mediastinal structures are unremarkable . Left - sided hemithorax appears quite normal .
    OUTPUT:
    
Further resolution of postoperative pleural changes , no residual pneumothorax . No new pulmonary or cardiovascular abnormalities .