Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal but demonstrates left ventricular configuration . Aorta is mildly tortuous . There is known mild dilation of ascending aorta by report of prior chest CT of ___ . Lungs and pleural surfaces are clear , and there are no concerning acute skeletal findings .
    OUTPUT:
    
No evidence of pleural effusion .