Pneumothorax (Traumatic) By Thomas G Weiser, MD, MPH, Stanford University School of Medicine Reviewed / Revised Apr 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Pneumothorax Degree of Collapse Pigtail Catheter Aspiration... Traumatic pneumothorax is air in the pleural space resulting from trauma and causing partial or complete lung collapse.