Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is a malignancy again seen within the right upper lobe significantly changed from prior exam , containing a fiducial marker . Underlying emphysema is again noted . There is no large effusion or pneumothorax . No convincing signs of pneumonia . The heart and mediastinal contour is stable . There is absence of the left sixth rib likely related to prior thoracotomy . No free air below the right hemidiaphragm .
    OUTPUT:
    
Essentially stable mass within the right upper lobe , compatible with known malignancy . No superimposed acute process .