Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are well aligned and intact . Lung volumes are low . There is persistent elevation of the right hemidiaphragm . Again seen is left basilar atelectasis . There is minimal increase in the indistinctness of the pulmonary vasculature in comparison the prior examinations . Possible septal lines are noted . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute abnormality .