Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild left base atelectasis laterally . The remainder of the lung fields are clear . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . There is no evidence of free air beneath the diaphragms .
    OUTPUT:
    
Mild basilar atelectasis .