LAUSR

The incidence of cerebrospinal fluid (CSF) leaks occurring during functional endoscopic sinus surgery (FESS) ranges from 0.2% to 0.8%. Accurate repair is crucial as an undetected dural defect poses a significant risk to the patient. Endonasal endoscopic closure of CSF leaks has replaced open surgical techniques. Therapeutic success depends on the location of the CSF leak, the surgical procedure and the postoperative treatment. In order to prevent iatrogenic damage to the anterior skull base and dura, the surgeon must be familiar with possible predisposing conditions. Here, we reviewed the 32 cases of iatrogenic CSF leaks occurring during FESS at our ENT department between 2000 and 2015. Our aim was to identify potential risk factors and define predilection sites for CSF leaks in the anterior skull base during FESS. In addition, we evaluated the method of repair with respect to the location of the leak.