Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Minor left base atelectasis is seen . No definite focal consolidation . Relatively low lung volumes . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . No displaced fracture is identified radiographically .
    OUTPUT:
    
Mild left base atelectasis without definite focal consolidation .