Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left internal jugular central venous catheter has been removed . Median sternotomy wires , mediastinal clips , and an aortic valve replacement are again seen . There is subsegmental atelectasis of the bilateral lung bases . There is no consolidation . There may be a small left pleural effusion . There is no consolidation or pulmonary edema . The cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax .
    OUTPUT:
    
No evidence of pneumonia or pulmonary edema . Bibasilar subsegmental atelectasis and suggestion of a small left pleural effusion . This preliminary report was reviewed with Dr . ___ , ___ radiologist .