Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-erect AP portable chest radiograph demonstrates median sternotomy wires which appear intact . Several clips project over the left and right mediastinal borders . Known large right lung mass with central fiducial marker appears slightly more dense relative to examination dated ___ . Cardiomediastinal and hilar contours are stable in appearance . There is no evidence of pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
Known right lung mass with central fiducial marker consistent with biopsy - proven malignancy . No new opacity convincing for pneumonia .