Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The right lower lobe opacity is due to known mass and nodules seen on CT ___ . No new opacity is seen . No pleural effusion and no pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . The patient is status post CABG with intact median sternotomy wires .
    OUTPUT:
    
Right lower lobe mass as seen on CT . No acute intrathoracic process .