Lumbar spinal drain use during thoracic and thoracoabdominal aortic aneurysm repair has reduced the incidence of ischemic spinal cord injury with relatively low risk. We report a case of pneumocephalus in a 55-year-old woman who had undergone open repair of a 6. 7-cm type IV thoracoabdominal aortic aneurysm. https://threadheaders.shop/product-category/blanks/