Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is slightly limited due to rotation . Heart size remains mildly enlarged . Elevation of the left hemidiaphragm is unchanged . Atelectasis within the left lung base is noted , but no focal consolidation , pleural effusion or pneumothorax is present . Mediastinal and hilar contours are unchanged , and no pulmonary vascular congestion is identified . Scarring within the apices is unchanged . Mild to moderate multilevel degenerative changes are present in the thoracic spine .
    OUTPUT:
    
Chronic elevation of the left hemidiaphragm with left basilar atelectasis . No acute cardiopulmonary abnormality otherwise demonstrated .