Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The hilar and mediastinal contours are within normal limits . The aorta is mildly calcified and tortuous . Central pulmonary vessels are prominent but there is no edema . No focal consolidation is seen . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute intrathoracic process .