Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer device is unchanged in position . The patient is status post median sternotomy . There is mild interstitial pulmonary edema . There is a small right pleural effusion . No definite focal consolidation is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Interstitial edema and small right pleural effusion .