Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Permanent pacemaker is in standard position with leads in the right atrium and right ventricle . The heart is mildly enlarged , but there is no evidence of pulmonary edema . Nonspecific area of increased opacity overlies the lower thoracic spine on the lateral view , and could potentially represent an early focus of pneumonia . No pleural effusion .
    OUTPUT:
    
Possible early basilar pneumonia , visualized only on the lateral radiograph .