Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously reported right upper lobe nodule is less conspicuous than on the prior study , but possibly still present . Chest CT remains recommended , as also on the prior study . The left lung is clear . There is no pleural effusion . No pneumothorax is seen . The patient is status post median sternotomy . Right central venous stent is again seen , similar in appearance . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Right upper lobe nodule seen on the prior study is less conspicuous than on the prior study but possibly still present . Nonurgent chest CTA remains recommended as was also the case on the prior study .