• Edward E Kerr, Daniel M Prevedello, Ali Jamshidi, Leo F Ditzel Filho, Bradley A Otto, and Ricardo L Carrau.
• Departments of Neurological Surgery, Wexner Medical Center, The Ohio State University College of Medicine, Columbus, Ohio.
• Neurosurg Focus. 2014 Jan 1;37(4):E3.

AbstractEndoscopic expanded endonasal approaches (EEAs) to the skull base are increasingly being used to address a variety of skull base pathologies. Postoperative CSF leakage from the large skull base defects has been well described as one of the most common complications of EEAs. There are reports of associated formation of delayed subdural hematoma and tension pneumocephalus from approximately 1 week to 3 months postoperatively. However, there have been no reports of immediate complications of high-volume CSF leakage from EEA skull base surgery. The authors describe two cases of EEAs in which complications related to rapid, large-volume CSF egress through the skull base surgical defect were detected in the immediate postoperative period. Preventive measures to reduce the likelihood of these immediate complications are presented.

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