Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and aortic valve replacement . The inferior - most mediastinal wire is broken , unchanged . Heart size remains mildly enlarged . Aorta is tortuous . Atherosclerotic calcifications are again demonstrated at the aortic knob . Lung volumes are lower compared to the previous exam . Mild pulmonary vascular congestion is noted . Patchy right basilar opacity likely reflects an area of atelectasis . No pleural effusion is identified . Assessment of the lung apices is limited by the patient 's neck and chin projecting over in these areas , but no large pneumothorax is identified . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion and patchy right basilar opacity , likely atelectasis . Pneumonia is not completely excluded and clinical setting .