Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is a large left pneumothorax with no convincing signs of tension . There is atelectasis noted in the lingula . Right lung is clear . Heart and mediastinal contours appear grossly unremarkable . No acute bony injury .
    OUTPUT:
    
Large left pneumothorax without signs of tension .