Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is apparently status post previous partial right lung resection . Superimposed on chronic pleural and parenchymal scarring is a new heterogeneous opacity at the right lung base . Within the left lung , a new patchy and linear area of opacification is present in the lingula with partial obscuration of the left heart border . Overall heart size is normal . Tortuosity of the thoracic aorta is unchanged . No evidence of pleural effusion or acute skeletal finding . Finally , note is made of upper lobe predominant emphysema .
    OUTPUT:
    
New heterogeneous right lower lung opacity , which may represent an acute pneumonia superimposed upon chronic scarring . Additional opacity in the lingula may reflect either a second focus of pneumonia or a focal atelectasis . Considering history of lung cancer , followup chest x-ray is recommended in four to six weeks after completion of antibiotic therapy in order to ensure complete resolution .