Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly tortuous and demonstrates aortic knob calcifications . The pulmonary vascularity is not engorged . The hilar contours are unchanged and within normal limits . Small bilateral pleural effusions are present . No focal consolidation or pneumothorax is present . No acute osseous abnormalities are seen .
    OUTPUT:
    
Small bilateral pleural effusions .