Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear stable , including a mass along the right cardiophrenic angle . On CT , it had been noted that this had increased somewhat since the earlier radiographs , although small changes are difficult to judge on radiography . A few of the nodules seen on CT are visible radiographically . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings associated with known malignancy , but no evidence for superimposed acute disease .