Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left basal atelectasis noted . Lung volumes are low . No convincing sign of pneumonia or edema . No large effusion or pneumothorax . Cardiomediastinal silhouette appears normal . The imaged bony structures are intact .
    OUTPUT:
    
Left basal atelectasis .