Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . The lungs are well expanded . Small opacity in the retrocardiac space on the lateral view may correspond to mild left basilar atelectasis on the frontal view . Previously noted pulmonary edema has resolved . There has been interval placement of a femoral approach dialysis catheter , terminating near the IVC RA junction .
    OUTPUT:
    
Mild left basilar atelectasis without focal consolidation concerning for pneumonia . No pulmonary edema .