前庭神经鞘瘤自然消退的放射学特征
Radiologic Features of Spontaneous Regression of Vestibular Schwannomas.
作者信息
Vellutini Eduardo de Arnaldo Silva, Teles Gomes Marcos de Queiroz, Brock Roger Schmidt, Oliveira Matheus Fernandes de, Salomone Raquel, Godoy Luis Filipe de Souza, Ruschel Leonardo Gilmone
机构信息
DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil.
DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil.
出版信息
World Neurosurg. 2020 Mar;135:e488-e493. doi: 10.1016/j.wneu.2019.12.034. Epub 2019 Dec 13.
BACKGROUND
Vestibular schwannoma (VS) is the most common benign tumor originating in the cerebellopontine angle. In most cases, tumors tend to grow and deserve proper treatment. Sometimes they stabilize, and rarely they decrease in size spontaneously.
METHODS
We evaluated retrospectively the images of patients with spontaneous tumor regression. We describe the common neuroimage findings of patients with spontaneous tumoral regression.
RESULTS
Four patients with diagnosis of VS were followed with magnetic resonance imaging (MRI). There were some relevant features in MRI: a heterogeneous contrast enhancement in the outer layer of the tumor and presence of a cerebrospinal fluid column between the tumor and the entrance of the internal auditory canal. The percentage of tumor diameter reduction ranged from 20% to 40%.
CONCLUSIONS
Some MRI features may demonstrate a spontaneous involution of VS and may be closely followed in asymptomatic or oligosymptomatic patients.
背景
前庭神经鞘瘤（VS）是起源于桥小脑角的最常见良性肿瘤。在大多数情况下，肿瘤倾向于生长，需要适当治疗。有时它们会稳定下来，很少会自发缩小。
方法
我们回顾性评估了肿瘤自发消退患者的影像资料。我们描述了肿瘤自发消退患者常见的神经影像表现。
结果
对4例诊断为VS的患者进行了磁共振成像（MRI）随访。MRI有一些相关特征：肿瘤外层不均匀强化，肿瘤与内耳道入口之间存在脑脊液柱。肿瘤直径缩小百分比在20%至40%之间。
结论
一些MRI特征可能显示VS自发消退，对于无症状或症状轻微的患者可密切随访。
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