Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New confluent left lower lobe opacity is best visualized on the lateral radiograph and partially obscures the left hemidiaphragm . There is also an apparent new patchy opacity at the right lung base in the infrahilar region . A poorly defined opacity in the right upper lobe at the level of the right third anterior rib may correspond to a nodular opacity present in this region on prior chest CTA of ___ . Linear scar or atelectasis is present at the right lung base . Lungs are otherwise grossly clear . Cardiomediastinal contours are stable . Note is made of previous sternotomy with fracture of the first sternal wire . Degenerative changes are present in the spine .
    OUTPUT:
    
1 . Confluent left lower lobe and patchy right lower lobe opacities , which may represent aspiration pneumonia given clinical suspicion for this entity . 2 . Poorly defined peripheral right upper lobe opacity , possibly corresponding to the site of a lung nodule on chest CTA of ___ . Once the lower lobe opacities have cleared on followup chest radiographs , consider a followup chest CT to assess for possible interval growth of the right upper lobe abnormality , which could potentially represent an early focus of lung neoplasm .