• Martin Planet, Alexandre Roux, Angela Elia, Alessandro Moiraghi, Arthur Leclerc, Oumaima Aboubakr, Aziz Bedioui, Antonia SimboliGiorgiaGDepartment of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France.Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Paris, France., Joseph Benzakoun, Eduardo Parraga, Edouard Dezamis, Jun Muto, Fabrice Chrétien, Catherine Oppenheim, Guillaume Turc, Marc Zanello, and Johan Pallud.
• Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France.
• Neurosurgery. 2024 Jan 11.

Background And ObjectivesCerebral venous sinus thrombosis (CVST) after supratentorial craniotomy is a poorly studied complication, for which there are no management guidelines. This study assessed the incidence, associated risk factors, and management of postoperative CVST after awake craniotomy.MethodsThis is an observational, retrospective, monocentric analysis of patients who underwent a supratentorial awake craniotomy. Postoperative CVST was defined as a flow defect on the postoperative contrast-enhanced 3D T1-weighted sequence and/or as a T2* hypointensity within the sinus.ResultsIn 401 supratentorial awake craniotomies (87.3% of diffuse glioma), the incidence of postoperative CVST was 4.0% (95% CI 2.5-6.4): 14/16 thromboses located in the superior sagittal sinus and 12/16 located in the transverse sinus. A venous sinus was exposed during craniotomy in 45.4% of cases, and no intraoperative injury to a cerebral venous sinus was reported. All thromboses were asymptomatic, and only two cases were diagnosed at the time of the first postoperative imaging (0.5%). Postoperative complications, early postoperative Karnofsky Performance Status score, and duration of hospital stay did not significantly differ between patients with and without postoperative CVST. Adjusted independent risk factors of postoperative CVST were female sex (adjusted Odds Ratio 4.00, 95% CI 1.24-12.91, P = .021) and a lesion ≤1 cm to a venous sinus (adjusted Odds Ratio 10.58, 95% CI 2.93-38.20, P < .001). All patients received standard prophylactic-dose anticoagulant therapy, and none received treatment-dose anticoagulant therapy. No thrombosis-related adverse event was reported. All thromboses presented spontaneous sinus recanalization radiologically at a mean of 89 ± 41 days (range, 7-171).ConclusionCVST after supratentorial awake craniotomy is a rare event with satisfactory clinical outcomes and spontaneous sinus recanalization under conservative management without treatment-dose anticoagulant therapy. These findings are comforting to neurosurgeons confronted with postoperative MRI reports suggesting CVST.Copyright © Congress of Neurological Surgeons 2024. All rights reserved.

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