Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Tracheostomy tube has been removed . The pulmonary vasculature is normal . There is minimal streaky atelectasis in the left lung base . No focal consolidation , pleural effusion or pneumothorax is identified . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .