Case Report: Series report and literature review on postoperative subdural hygroma complications following biportal endoscopic spinal surgery

The development of subdural hygroma following BESS may be attributed to a combination of factors, including occult dural tears, abrupt alterations in intraspinal pressure, and ischemia-reperfusion injury. In view of the potential clinical implications of this rare complication, greater awareness and monitoring is warranted in the postoperative management of patients undergoing BESS.