Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior radiograph dated ___ , there is increased patchy opacification within the right middle lobe with fiducial marker in unchanged position . The remainder of the lungs appear clear . Cardiomediastinal and hilar contours are within normal limits . No evidence of pneumothorax or pleural effusion . Patient is status post median sternotomy and CABG . Osseous structures are unremarkable .
    OUTPUT:
    
Increased patchy opacification within the right middle lobe surrounding a solitary fiducial marker compatible with FDG avid right middle lobe mass previously demonstrated on PET - CT dated ___ . Please refer to subsequent CT for further details .