Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided double lumen central venous catheter , dialysis catheter is again seen , unchanged in position , terminating cavoatrial junction / right atrium . Vascular stent is again seen projecting over the right upper mediastinum . The patient is status post median sternotomy . Cardiac and mediastinal silhouettes are stable . Again , there are increased interstitial markings bilaterally which may be due to chronic lung disease , however , a component of mild interstitial edema may be present . No focal consolidation is seen . No large pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Again , there are increased interstitial markings bilaterally which may be due to chronic lung disease , however , a component of mild interstitial edema may be present . No focal consolidation .