Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable , mild to moderate cardiomegaly . Possible dilation of the ascending aorta . Normal mediastinal and hilar contours . Normal pleural surfaces . Fully expanded , clear lungs . No pneumonia or pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary process . Possible dilation of the ascending aorta may warrant further workup with chest CT .