Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a temporary pacing lead terminating in the region of the right ventricle via a right internal jugular approach . No pneumothorax . Lung volumes remain low . Moderate enlargement of the cardiac silhouette persists . The aorta is markedly tortuous and diffusely calcified . Pulmonary vasculature is not engorged . Linear retrocardiac opacity persists , likely atelectasis , without large pleural effusion or pneumothorax .
    OUTPUT:
    
Temporary pacing lead appears to terminate in the region of the right ventricle . No pneumothorax .