Spinal subdural empyema in an immunocompetent patient: illustrative case

Successful treatment requires prompt clinical suspicion, radiological diagnosis, and surgical evacuation along with empirical antibiotic treatment. Radiological clarification of the subdural versus the epidural location of the empyema is difficult, while intraoperative durotomy for exploration risks subdural dissemination. In these cases, intraoperative ultrasonography would be a useful adjunct and decision aid. https://thejns.org/doi/10.3171/CASE24464.