Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is enlarged . Pacemaker with intact lead wire terminates in the right atrium . The bones are intact . Opacity at the left lung base is not seen on the CT from 10 days prior and is likely atelectasis due to low lung volumes . Additional opacity in the right lung base measuring ___ x 6 mm could represent a pulmonary nodule .
    OUTPUT:
    
1 ) No evidence of pneumonia . 2 ) Possible nodule in the right lower lobe not seen on the abdominal CT . Correlate with prior imaging or repeat radiograph after the patient 's acute process resolves . If the nodule persists , a chest CT should be considered .