Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker noted terminating in the right ventricle ; however , the right atrial lead is positioned laterally and the right heart border is not completely evident at this level . Cardiomediastinal and hilar contours are unremarkable . Lungs are clear . No pleural effusion or pneumothorax evident .
    OUTPUT:
    
Pacemaker leads positioned in the right atrium and ventricle . However , right atrial lead tip position can not be clearly related to right heart border . Finding likely reflects patient position though can not exclude perforation . Could be further evaluated with repeat radiograph or noncontrast chest CT . ___ communicated these findings to Dr ___ at 17 : 40 on ___ via telephone .