Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is at the upper limits of normal . Aorta is calcified and minimally unfolded . The mediastinal and hilar contours are otherwise within normal limits . No CHF , focal infiltrate , effusion or pneumothorax detected . Faint hazy opacity at both lung bases peripherally is thought to represent artifact due to overlying soft tissues .
    OUTPUT:
    
No acute pulmonary process identified . No evidence of pneumonia .