Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a chronically elevated left hemidiaphragm with rightward shift of mediastinal structures . Calcified enlarged right paratracheal node is redemonstrated . The heart size appears to be within normal limits . The pulmonary vascularity is normal . There is no focal consolidation , pleural effusion or pneumothorax . Mild atelectasis in the left lower lobe is redemonstrated . There are no acute osseous abnormalities .
    OUTPUT:
    
Chronically elevated left hemidiaphragm with associated left lower lobe atelectasis . No acute cardiopulmonary abnormality otherwise demonstrated .