Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly appeasr stable . The thoracic aorta is tortuous with a calcified aortic knob . Mild bibasilar atelectasis without substantial pleural effusion . No overt CHF . No lobar consolidation or pneumothorax .
    OUTPUT:
    
Moderate cardiomegaly and mild bibasilar atelectasis . No overt CHF or focal consolidation .