Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and aortic valve replacement . Moderate cardiomegaly is re - demonstrated . Mediastinal and hilar contours are normal . There is no pulmonary vascular congestion . Minimal right basilar atelectasis is seen . No pleural effusion , focal consolidation or pneumothorax is demonstrated .
    OUTPUT:
    
Unchanged cardiomegaly without evidence of congestive heart failure . Mild right basilar atelectasis .