Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Transvenous pacing wires project within the right atrium and right ventricle . The heart is mildly enlarged . The mediastinal contour is unremarkable . There is mild calcification of the aortic arch . There is no pleural effusion or pneumothorax . There is no evidence of pulmonary edema . Streaky linear left basilar opacity may reflect focal atelectasis or linear scar .
    OUTPUT:
    
No evidence of congestive heart failure were pneumonia .