Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided cardiac pacemaker projects leads into the right atrium and ventricle . The heart size is normal . There is mild calcification of the aorta . There is no pneumothorax , focal consolidation , or pleural effusion .
    OUTPUT:
    
No acute intrathoracic process . The initial findings were discussed by Dr . ___ with Dr . ___ ___ telephone at 4 :20 PM on ___ .