Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is new minimal , linear right basal opacity , likely atelectasis . Left lingular atelectasis is minimal . Otherwise , the lungs are clear . Moderate cardiomediastinal silhouette has decreased since postop , and has appropriate postop appearance . There is no pleural effusion , pulmonary edema or pneumothorax . Median sternotomy wires are aligned and intact . Left - sided single chamber pacemaker is unchanged in position .
    OUTPUT:
    
New minimal , linear right basal atelectasis . No pneumonia .