Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . There is mild tortuosity of the thoracic aorta . Hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic process . Results were discussed over the telephone with Dr . ___ by Dr . ___ ___ at 11 :59 a .m . on ___ at the time of initial review .