The sellar barrier and intraoperative CSF leak in elderly patients.

Cerebral spinal fluid (CSF) leak is a significant complication in pituitary surgery, increasing both patient morbidity and mortality. In a recent publication, Campero et al. observed worse postoperative prognosis and increased risk of intraoperative CSF leak in patients with reduced sellar barrier thickness. The objective of this study was to analyze the association between sellar barrier thickness and intraoperative CSF leak in older individuals. A retrospective review was conducted of 44 transsphenoidal surgery resections for pituitary adenomas, 24 microscopic and 20 purely endoscopic procedures. Presence of intraoperative CSF fistula was significantly greater in patients with weak sellar barrier (thickness under 1 mm), compared to strong sellar barrier (52.94% vs 3.70% p < 0.0001, respectively). Application of this novel concept may help improve surgical technique selection as well as predict risk of intraoperative CSF leak and need for eventual use of flaps for reconstruction.