Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's chin overlies a medial lung apices , partially obscuring the view . The patient is status post median sternotomy . The cardiac and mediastinal silhouettes are grossly stable . There is moderate pulmonary vascular congestion . There is persistent elevation of the right hemidiaphragm and overlying atelectasis . Bilateral rib fractures , some of which are old and some of which are new for better assessed on preceding CT . No large pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Moderate pulmonary vascular congestion . Persistent elevation of the right hemidiaphragm and overlying atelectasis . Bilateral rib fractures , some of which are old and some which are new , are better seen on preceding chest CT .