Delayed symptomatic cerebrospinal fluid leakage after spine surgery with an intraoperative occult dural tear: An institutional experience and literature review

Cerebrospinal fluid (CSF) leakage is a hazardous complication after spine surgeries. Although most CSF leakages occur because of intraoperative dural tears, there are several reports that delayed CSF leakage occurred with undetected dural tears during surgery, which is known as occult dural tears (ODT). In this paper, we investigate ODT resulting in delayed CSF leakage following spinal surgery in our institute. A retrospective review was...