Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Battery pack and pacemaker leads terminate in appropriate and unchanged position . No pleural effusion or pneumothorax . The lungs are clear of any focal opacities concerning for infectious process . Tortuous calcified aortic knob is again noted .
    OUTPUT:
    
No evidence of acute intrathoracic process .