Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A severe new interstitial lung abnormality is found mostly in the left upper lobe . There is a growing opacification in the right upper paramediastinal lung where a fiducial marks the focused radiation treatment of a non-small cell lung cancer . Callus formation marks healed rib fractures . Small bilateral pleural effusions are new . Cardiomediastinal and hilar contours are unremarkable .
    OUTPUT:
    
New interstitial abnormality , more likely infection or drug reaction than cardiogenic edema . Probable local recurrence , radiated right upper lobe lung cancer .