Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . Elevation of the left hemidiaphragm is again noted . Atelectasis at the left base is noted . No focal consolidation is present . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
Left basilar atelectasis .