• Alexandra J White, João Paulo Almeida, FilhoLeonardo MacedoLMDepartment of Neurosurgery, Pennsylvania State University, Hershey, Pennsylvania, USA., Precious Oyem, Derrick Obiri-Yeboah, Divya Yogi-Morren, Varun R Kshettry, and Pablo F Recinos.
• Department of Neurosurgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio, USA.
• World Neurosurg. 2024 Sep 7; 191: 205212205-212.

BackgroundThere is a well-documented association between Cushing's syndrome (CS) and hypercoagulability. However, there is limited data on the risk of venous thromboembolic events (VTEs) after surgery for Cushing's disease (CD). There is no consensus on optimal postoperative anticoagulation strategies in this group. This review gathers information on the rates of VTE after surgery for CD, as well as reported prophylaxis strategies in this population.MethodsA literature search was performed using Cochrane Library, EMBASE, and Ovid MEDLINE databases according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A narrative review of papers discussing mechanisms of hypercoagulability in CS was conducted.ResultsTwenty-five relevant papers were identified out of 944 papers yielded. Pooled postoperative VTE incidence in patients undergoing transsphenoidal surgery for CD was 2% (58 out of 2997). The pooled rate of VTE-associated mortality based on the 23 studies that reported this information was 0.2% (6 out of 2077). There were no cases of postoperative VTE in the 191 patients undergoing adrenalectomy for benign adrenocorticotropic hormone-independent CS. Ten studies reported information on perioperative thromboprophylaxis strategies in transsphenoidal surgery for CD and adrenalectomy for adrenocorticotropic hormone-independent CS.ConclusionsPostoperative VTE in CD is a source of morbidity, with a rate of 2% and mortality rate of 0.2%, highlighting that surgical resection of the corticotroph adenoma does not necessarily result in immediate resolution of hypercoagulability. Increased production of coagulation factors, impaired fibrinolysis, inflammation, and CS-associated metabolic risk factors all factor into the pathogenesis of CS-associated hypercoagulability. Further study is needed on an optimal pharmacologic prophylaxis strategy.Copyright © 2024. Published by Elsevier Inc.

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