Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . Right central venous stent is again demonstrated in unchanged position . Cardiac and mediastinal hilar contours are within normal limits . Previously seen opacities within both mid lung fields have resolved . There are persistent patchy opacities within the right upper lobe , which may reflect the residua of prior infection or scarring . No new focal consolidation , pleural effusion or pneumothorax is seen . The pulmonary vascularity is normal . Scarring within the lung apices is re - demonstrated .
    OUTPUT:
    
Residual patchy opacities in the right upper lobe may reflect residua of prior infection or scarring . No new focal consolidation . No evidence of congestive heart failure .