• Jian-Cong Weng, Zhi-Feng Zhang, Da Li, Jun-Mei Wang, Gui-Lin Li, Yu-Lun Xu, Jun Yang, Jun-Ting Zhang, and Wen-Qing Jia.
• Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China.
• Neurosurgery. 2020 Apr 1; 86 (4): 548-556.

BackgroundLimited data existed to guide the management of intraspinal neurenteric cysts (ISNECs).ObjectiveTo evaluate the risk factors for progression-free survival (PFS), elucidate the radiological features of ISNECs, and propose a treatment protocol.MethodsFrom 2003 to 2015, 121 patients with pathologically confirmed ISNECs treated at our institute were included in this study. Pertinent risk factors were evaluated.ResultsGross total resection (GTR) was achieved in 55 (44.6%) patients; 106 (87.6%), 12 (9.9%), and 3 (2.5%) ISNECs were classified as Wilkins A, B, and C, respectively. After a median follow-up duration of 64.2 mo, recurrence occurred in 25 (22.7%) patients, with a median PFS time of 43.1 mo. The actuarial PFS rates at 5 and 10 yr were 73.2% and 66.2%, respectively. The actuarial overall survival rates at 5 and 10 yr were 100% and 97.6%, respectively. Non-GTR (hazard ratio [HR], 5.836; 95% confidence interval [CI], 1.698-20.058; P = .005), Wilkins B/C (HR, 3.129; 95% CI, 1.009-9.702; P = .048), and a history of surgical resection (HR, 3.690; 95% CI, 1.536-8.864; P = .004) were adverse factors.ConclusionGTR and Wilkins A were favorable factors for PFS. If tolerable, GTR alone was advocated as an optimal treatment. Because of the benign nature and favorable prognosis, non-GTR was an alternative if GTR failed. Close follow-up was needed because of the recurrent tendency of ISNEC. Future study with a large cohort is necessary to verify our findings.Copyright © 2019 by the Congress of Neurological Surgeons.

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