Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Previously identified right apical pneumothorax is no longer visualized . Linear bibasilar opacities , suggestive of scar versus atelectasis , again noted . Small left pleural effusion persists , unchanged . Trace right pleural effusion also persists . Superiorly , the lungs are clear . Cardiac silhouette is enlarged but stable in configuration . Median sternotomy wires and mediastinal clips are again noted . There is no evidence of pulmonary vascular congestion . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Interval resolution of right apical pneumothorax . Otherwise , no change . Persistent small left pleural effusion and probable bibasilar atelectasis .