• World Neurosurg · Nov 2017

    Case Reports

    Surgical treatment of cavernous malformations involving the midbrain:a single center case series of 34 patients.

    • Yanming Ren, Jin Li, Chuanyuan Tao, Jun Zheng, Si Zhang, Anqi Xiao, Ruiqi Chen, and Chao You.
    • Department of Neurosurgery, West China Hospital, Chengdu, China.
    • World Neurosurg. 2017 Nov 1; 107: 753-763.

    BackgroundCavernous malformations (CMs) involving the midbrain are more challenging for surgical treatment than are CMs at other sites because of the surrounding critical structures and deep location. However, specific features and treatment strategies have not been well illustrated.ObjectiveTo evaluate the long-term durability of surgical treatment of midbrain CMs (MBCMs) as well as surgical outcomes and complications.MethodsA retrospective study was conducted in 34 patients who underwent microsurgical resection of MBCMs between 1995 and 2015. Demographics, lesion characteristics, surgical approaches, surgical outcomes, and complications were analyzed.ResultsA total of 34 adult patients with a mean age of 38.6 years were assessed. All patients presented with a history of hemorrhage. Lesion locations included the midbrain (n = 27), midbrain and thalamus (n = 2), and pontomesencephalic junction (n = 5). Mean lesion size was 1.7 cm; average clinical follow-up was 5.6 years. Mean modified Rankin Scale (mRS) scores on admission, at discharge, and at last follow-up were 2.0, 2.7, and 1.7, respectively. Postoperatively, 19 patients (55.9%) showed new or worsened neurologic deficits. Multivariate analysis showed that admission mRS score (≥3) was an independent predictor of poor functional outcome (odds ratio, 50.832; 95% confidence interval, 2.967-901.283; P = 0.007). No rehemorrhage or recurrence case was found during the follow-up period.ConclusionsAlthough surgery for MBCMs is associated with significant perioperative morbidity and mortality, most patients show favorable outcomes. Higher preoperative mRS score is an independent predictor of poor functional outcome.Copyright © 2017 Elsevier Inc. All rights reserved.

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